Use the Figure to Answer the Following Question(s)

Use the figure to answer the following question(s) .
Figure 11-13

If the firms in the industry depicted in Figure 11-13 compete with each other, what would the industry's price and output be?

A) price, $10; output, 600
B) price, $15; output, 500
C) price, $20; output, 400
D) price, $25; output, 300