Exhibit 22-9 ​ Refer to Exhibit 22-9. Suppose That the Market Starts Out

Exhibit 22-9 ​

Refer to Exhibit 22-9. Suppose that the market starts out at long-run competitive equilibrium with price equal to P₁  and producing Q₁ output, and then demand increases from D₁ to D₂. As a consequence, the typical profit-maximizing firm will

A) increase quantity produced by (q₂ - q₁) .
B) decrease quantity produced by (q₂ - q₁) .
C) decrease quantity produced by (q₁ - q₃) .
D) not change its output level because the demand curve it is facing did not change.