Why do tornadoes produce more wind speed at the bottom of the funnel?
A. Wind speed is greater at the bottom because the rate of rotation increases as the radius increases.
B. Wind speed is greater at the bottom because the rate of rotation increases as the radius decreases.
C. Wind speed is greater at the bottom because the rate of rotation decreases as the radius increases.
D. Wind speed is greater at the bottom because the rate of rotation decreases as the radius increases.