Assuming Initially That the Required Reserve Ratio = 10%,the Currency-Deposit

Assuming initially that the required reserve ratio = 10%,the currency-deposit ratio = 40%,and the excess reserve ratio = 0,an increase in the required reserve ratio to 15% causes the M1 money multiplier to ________,everything else held constant.

A) increase from 2.55 to 2.8
B) decrease from 2.8 to 2.55
C) increase from 1.82 to 2
D) decrease from 2 to 1.82