Carruthers Heating & Air Conditioning Corporation, a cash-basis taxpayer, sells service contracts on the furnaces and air conditioners it sells. At the beginning of January of this year, Carruthers Heating & Air Conditioning Corporation sold contracts with service to begin immediately:

One for three months	$200
One for 20 months	800
One for 48 months	4,000

The amount of income Carruthers Heating & Air Conditioning Corporation must report for this year is

A) $200.

B) $1,000.

C) $1,680.

D) $5,000.