The teachers at a middle school plan to sell book bags to raise money for a school trip. The teachers asked students, "How much would you pay for a special book bag?" The survey data are shown below: Write an equation that shows the number of bags sold, n, dependendent on the price charged, p.

A
n=−10p+200

B
n=10p+20

C
n=10p+200

D
n=−10p+20