Explanation:

Explanation:
The role of CAG is to uphold the Constitution of India and the laws of Parliament in the field of financial administration. To secure accountability of the executive to the Parliament in the sphere of financial administration, CAG conducts audit of expenditure on behalf of the Parliament. He is an agent of the Parliament and is responsible only to the Parliament. Hence, statement 1 is incorrect.
The CAG submits his audit reports relating to the accounts of centre to President, who places them before both the houses of Parliament. Hence, statement 2 is incorrect.
Public Accounts Committee then examines the annual audit reports of CAG, and in the fulfillment of this function it is assisted by the CAG. The secret service expenditure is a limitation on the auditing role of the CAG. CAG cannot call for particulars of expenditure incurred by the executive agencies but has to accept a certificate from the competent administrative authority that the expenditure has been so incurred under his authority. Advice of CAG is required in the appointment of private auditors for government companies. Hence, statement 3 is incorrect.
CAG does not audit the RBI, whose auditors are appointed by Central government according to the provisions of RBI Act. Hence, statement 4 is correct.