The Fed Can Set the Ratio of Legally Required Reserves

The Fed can set the ratio of legally required reserves between the limits of 8 and 14 percent on checkable deposits.Hence,the maximum multiple by which the banking system could theoretically expand a dollar of excess reserves would vary between

A) 2 and 3.
B) 5 and 6.
C) 8 and 14.
D) 12 and 7.
E) 14 and 6.