A Gasoline Engine Absorbs 2 500 J of Heat and Performs

A gasoline engine absorbs 2 500 J of heat and performs 1 000 J of mechanical work in each cycle. The amount of heat expelled in each cycle is

A) 1 000 J
B) 1 500 J
C) 2 000 J
D) 500 J
E) 3 000 J