At the Gaussland Olympics there are 480 student participants. Each student is participating in 4 different events. Each event has 20 students participating and is supervised by 1 adult coach. There are 16 adult coaches and each coach supervises the same number of events. How many events does each coach supervise?

**Answer Choices**

A. 12

B. 8

C. 6

D. 16

E. 15