Researchers once surveyed students on which superpower they would most like to have. The column relative frequency table displays the data for the sample of students who responded to the survey. Men Female
super strength 50% 10%
Flight 30% 40%
Invisibility 20% 50%
Total 100% 100%

Based on the data, which of the following statements must be true?

A
The total number of people who responded to the survey is 200.

B
The number of males who prefer super strength is equal to the number of females who prefer invisibility.

C
There appears to be an association between gender and superpower preference.

D
There is no association between gender and superpower preference.