The revenue from selling x shirts is r(x) = 12x.

The cost of buying x shirts is c(x) = 5x + 20.

The profit from selling x shirts is p(x) = r(x) – c(x).

What is p(x)?

A. p(x) = 7x – 20
B. p(x) = 17x + 20
C. p(x) = 17x – 20
D. p(x) = 7x + 20