Air near the Equator Averages Higher Temperatures Than Air near the Poles

Multiple Choice

Air near the equator averages higher temperatures than air near the poles because

A) polar air is cooled by ice and snow on the ground.
B) solar energy is readily absorbed due to increased levels of CO₂ and water vapor in the air.
C) sunlight falls in a more vertical position at the equator than near the poles.
D) the oceans near the equator are warmer than those near the poles.