Which Part of a Storm Is Likely to Form Tornadoes

Multiple Choice

Which part of a storm is likely to form tornadoes?

A) under the leading edge of the stratocumulus cloud
B) immediately ahead of the heaviest rain.
C) under the left edge of the storm cloud (viewed in the direction of storm travel)
D) in the tailing part of the area of heaviest rain
E) in the rotating winds of the trailing edge of the stratocumulus cloud