A Depositor Places $5,000 in Cash in a Commercial Bank

A depositor places $5,000 in cash in a commercial bank, and the reserve ratio is 20 percent; the bank sends the $5,000 to the Federal Reserve Bank. As a result, the reserves and excess reserves of the bank have been increased, respectively, by:

A) $5,000 and $1,000
B) $5,000 and $4,000
C) $5,000 and $5,000
D) $4,000 and $4,000