The Money Supply Would Tend to Fall If

The money supply would tend to fall if:

A) ​banks decide to keep more excess reserves and people convert more of their demand deposits to currency.
B) ​banks decide to keep more excess reserves and people deposit currency in their demand deposit accounts.
C) ​banks decide to keep fewer excess reserves and people deposit currency in their demand deposit accounts.
D) ​banks decide to keep fewer excess reserves and people convert more of their demand deposits to currency.