Which of the Following Is True of Thunderstorms

Multiple Choice

Which of the following is true of thunderstorms?

A) In North America the least thunderstorms occur in areas dominated by mT air masses.
B) The largest authenticated hailstone weighed 75.8 g.
C) In the North America,the area with the highest number of thunderstorms per year has the highest average number of tornadoes per year.
D) Kampala,Uganda,is the place with the most thunderstorms per year (242) and it sits virtually on the equator.