The correct option is B Repo Rate
Liquidity Adjustment Facility (LAF) is a tool used in monetary policy by the RBI, that allows banks to borrow money through repurchase agreements (repos) or for banks to make loans to the RBI through reverse repo agreements.
-Repo rate is the rate at which a country’s central bank (RBI) lends money to commercial banks and Reverse repo rate is the rate at which the RBI borrows money from commercial banks within the country.
-Marginal Standing Facility is a window for scheduled banks to borrow overnight from the RBI in an emergency situation when interbank liquidity dries up completely.
Repo Rate and Marginal Standing Facility form part of the Liquidity adjustment facilities of RBI. (Under interbank lending, banks lend funds to one another for a specified term).