Twenty Students Were Randomly Selected from a Business Statistics Course

Multiple Choice

Twenty students were randomly selected from a business statistics course and were asked to report the number of times that they had eaten a meal at the university's cafeteria within the past month. Below are the values reported:
7, 8, 10, 11, 8, 6, 10, 9, 9, 8, 13, 12, 8, 11, 11, 14, 8, 7, 10, 12

-What are the outer fences?

A) 17,20
B) -1,20
C) 3.5,15.5
D) 12.5,15.5
E) 4.5,9.0