What Is the Main Reason That Polar Regions Are Cooler

Multiple Choice

What is the main reason that polar regions are cooler than the equator?

A) The poles are permanently tilted away from the Sun.
B) There is more ice at the poles.
C) The poles are farther from the Sun.
D) The polar atmosphere is thinner and contains fewer greenhouse gases.
E) Sunlight strikes the poles at a lower angle.