The box-and-whisker plot below show the number of movies watched lasted month by students in mr. garcia's 1st period and 2nd period class. which of following statements is true?

I found the corresponding plot and choices.
 
                           1st period             2nd period
minimum                  1                           0
q1                           3                           1
q2                           4                           3
q3                           7                           7
maximum                11                         13

My answer among the given choices was:
 
More students watched movies in Mr. Garcia's 2nd period class than in his 1st period class.

It would be 15 m how i got the answer: (20x20) + b^2 = (25x25)400 + b^2 = 625625-400=225square that and get 15hope this : )