As hot gases leave the cylinder of an internal combustion engine on the exhaust stroke,the hot gases?

Question

A,collide with the outside air and do work on the air outside.
B.cause the pistions to move outward as they condense in the cylinder.
C.absorb heat from the outside gases.
D.decrease the entropy of the outside air

Answer 1

A. As the hot gas exits the cylinder it does work on the air outside.

Not B. Hot gases would condense on the cylinder during the exhaust stroke except the piston is moving inward, not outward during this cycle.

Not C. Because the surrounding air around the engine exhaust is usually cooler, not hotter than the hot gases therefore, the hot gases tend to give off heat, not absorb heat.

Not D. Because you would be increasing the entropy of the outside air with the hot exhaust gas, not decrease the entropy.

Answer 2

A is the only one that doesn't violate the 1st and 2nd laws