On a clear,warm day,you notice the approach of a tall cumulus cloud.The cloud top has hard well defined edges and rain is falling from the dark lower edge. Should this cloud pass directly overhead ______.
A.
it will be preceded by a sudden increase in wind speed
B.
it will be preceded by a sudden decrease in wind speed
C.
the wind speed will not change as it passes
D.
the wind will back rapidly to left in a counterclockwise direction as it passes