Consider the following statements The Reserve Bank of India1. acts as a Banker's Bank2. act as a controller of capital issues3. issues currency notes of various denominations4. acts as a lender of the last resort for the sick industrial units Which of the above statements are correct?

Public finance is the study of the role of the government in the economy. It is the branch of economics that assesses the government revenue and government expenditure of the public authorities and the adjustment of one or the other to achieve desirable effects and avoid undesirable ones.