As Surface Air Rushes in Toward the Eye of a Hurricane

As surface air rushes in toward the eye of a hurricane, the air expands and should cool. The main reason the surface air is not cooler around the eye is that ____.

A) the sinking air near the eye warms the air
B) friction with the water adds heat to the air
C) the warm water heats the air
D) sunlight heats the air
E) the spinning motion prevents air from rising or sinking