Explanation:

None of the above

In the 18th century, three Carnatic Wars were fought between various Indian rulers and British and French East India Company on either side. These wars resulted in establishment of political supremacy of British East India Company. The French company was reduced in the areas around Pondicherry only. Commercial and maritime rivalry between France and England was the primary reason behind these wars. The entire south India was divided into minor Rajas, Nawabs and petty chieftains who fought with each other for supremacy. British and French took opposite sides to support these rivals and increase their own dominance.
Causes for Failure of France and Success of British
Following are some of the main causes which were responsible for the failure of the French and the success of the British in India :

Commercial Superiority and Better Financial Position
The trade carried on by the English Company was far greater than the French Company. Between 1736 to 1756, the trade of British Company was four times than that of French company. The financial position of French further deteriorated with the third Carnatic war and by the close of this war, it was not able to pay even its troops.

Private Character of the English Company
British Company was a private enterprise and this created a spirit of self reliance. French Company was more or less a department of the Government. It completely depended on Government. The corruption was in vogue in French Government and the same reflected in company also.

Naval Supremacy of the East India Company
The British had naval supremacy and due to that they were able to send help whenever required. This naval supremacy helped them to cut link between French possessions in India and France.

Better English Naval Base
Bombay was British Naval base. French Naval Base was in Isle of France. Due to this French failed to take any speedy action during the Carnatic wars.

English Company was backed by English Government
The British East India Company though private in character, was backed by the British Government. Some directors of the East India Company were Members of Parliament who could exercise influence in Government.

Better men Service of English
The British Company was headed by Clive who was a soldier as well as a statesman. Though Dupleix was also a statesman but he was not a soldier. There was a better cooperation and coordination in British East India Company.

Superior Settlements of British
British had their settlements in Calcutta, Bombay and Madras. The most important French settlement was in Pondicherry. Thus, British were at advantageous position. Further, French’s entry point in mainland India was Deccan. In comparison to Deccan, the Bengal was much more prosperous.

Recall of Dupleix
Recall of Dupleix by French Government was a blunder. The vacuum created was not filled by the persons who succeeded him.

Mistakes of Lally
Count de Lally come to India as the French Governor General and Commander in Chief during the Third Carnatic war. He lacked the foresight and statesmanship of Dupleix. His departure from Hyderabad ended the French influence there. Nizam Salabat Zing allied himself with the English and gave Northern Circars to the English.

French subordinated their Commercial Interest to Territorial Ambitions
The French Company subordinated their Commercial interests to their territorial ambitions. This worsened the financial position of the company.