[单选题]
In a cloud formation, water vapor condenses into ys f-qzud+.iv8.d 0bjwater dropl; r 7vr(x iyzmw5fo5v.ets which get bigger and bigger until it rains. This will c7 wzv 5;v.roiyrfx5m( ause the temperature of the air in the clouds to
A. increase.
B. decrease.
C. stay constant.
D. freeze.
