A homeowner in a sunny climate has the opportunity to install a solar water heater in his home for a cost of

$3,000.

After installation the solar water heater will produce a small amount of hot water every day, forever, and will require no maintenance. How much must the homeowner save on water heating costs every year if this is to be a sound investment? (The interest rate is

6%

per year.)

A.

$195

B.

$225

C.

$210

D.

$180