Mr. Chang’s class has 28 students, 4/7 of whom are girls. Which equation shows how to determine the number of girls in Mr. Chang’s class?

A. 28 ÷ 4/7 = 49

B. 28 x 4/7 = 16

C. 4/7 ÷ 28 = 1/49

D. 7/4 ÷ 28 = 1/16