Explanation:

Statement 1 is correct: Samharta, was the highest officer, in charge of tax assessment and Sannidhata was the chief custodian of the state treasury and storehouse. Statement 2 is correct: The Mauryan army was well organized and it was under the control of Senapati. The salaries were paid in cash. Kautilya refers to the salaries of different ranks of military officers. According to Greek author Pliny, the Mauryan army consisted of six lakh infantry, thirty thousand cavalry, nine thousand elephants and eight thousand chariots. In addition to these four wings, there were the Navy and Transport and Supply wings. The administration of armed forces according to Megasthenes was carried out by a board of 30 officers , divided into 6 committees of 5 members each, each of these committees was responsible for a particular wing of the armed forces. Statement 3 is correct: The Mudrarakshasa written by Visakhadatta is a drama in Sanskrit. Although written during the Gupta period, it describes how Chandragupta with the assistance of Kautilya overthrew the Nandas. It also gives a picture of the socioeconomic condition under the Mauryas.