Explanation:

CAG report brought out the 2G spectrum scam. It was said to be the biggest scam in the history of Independent India. Time Magazine has called it the second biggest instance of the abuse of executive power- just a notch below Richard Nixon's Watergate scandal. The Comptroller and Auditor General of India is an authority, established by Article 148 of the Constitution of India, which audits all receipts and expenditure of the Government of India and the state governments, including those of bodies and authorities substantially financed by the government.