The correct option is
D (a)-
4, (b)-
1, (c)-
2, (d)-
3RBI - Credit control is an important tool of the monetary policy used by the Reserve Bank of India (central bank) to control the demand and supply of money and the flow of credit in an economy. RBI keeps control over the credit created by commercial banks
MCA -MCA is primarily concerned with the administration of the Companies Act, 1956, other allied Acts and rules & regulations framed there-under mainly for regulating the functioning of the corporate sector in accordance with the law.
SEBI - SEBI's responsibility is to ensure that the securities market in India functions in an orderly manner. It is made to protect the interests of investors and traders in the Indian stock market by providing a healthy environment in securities and to promote the development of, and to regulate the equity market.
IRDA - A Unit Linked Insurance Plan (ULIP) is a product offered by insurance companies that, unlike a pure insurance policy, gives investors both insurance and investment under a single integrated plan.