b. the FOMC
[The Federal Open Market Committee (FOMC) is the monetary policymaking body of the Federal Reserve System. It is responsible for formulation of a monetary policy designed to promote economic growth, full employment, stable prices, and a sustainable pattern of international trade and payments.
The FOMC sets monetary policy by specifying the short-term objective for open market operations--purchases and sales of U.S. government and federal agency securities. Open market operations, the principal tool of monetary policy, affect the provision of reserves to depository institutions and, in turn, the cost and availability of money and credit in the U.S. economy. Currently, the objective is a target level for the federal funds rate (the rate that depository institutions charge on overnight sales of immediately available funds among themselves). The FOMC also directs Federal Reserve operations in foreign currencies; such operations are coordinated with the U.S. Treasury, which has responsibility for formulating U.S. policies regarding the exchange value of the dollar.