The coast of California on the western side of the state has a moist climate, while the eastern side is a desert. What could cause this difference?
A.
Cool winds cannot blow across a large lake into the desert.
B.
Mountains prevent moist air from blowing over into the desert.
C.
The west side is closer to the equator than the east.
D.
California has experienced a drastic climate change in the past few years.