Would the point be n=100

You create a graph of cost function C=20n +500 of a new bookstore, and you also graph the revenue function, r=25n, where n is the number of books sold. On your graph would the point n= 100 be in the loss section, profit section, or break-even section?
A.YOU CAN'T TELL
B.LOSS SECTION
C.PROFIT SECTION
D.BREAK-EVEN SECTION?

r=25(100) = 2500

C=20(100) + 500 = 2000 + 500 = 2500

D. BREAK-EVEN SECTION

n^100