【单选题】If the ratio of reserves to deposits (rr) increases, while the ratio of currency to deposits (cr) is constant and the monetary base (B) is constant, then:
A.
it cannot be determined whether the money supply increases or decreases.
【单选题】If the monetary base is denoted by B, rr is the ratio of reserves to deposits, and cr is the ratio of currency to deposits, then the money supply is equal to ______ divided by ______ multiplied by B.