Figure 4-5 -Refer to Figure 4-5. the Figure Above Represents the Market

Figure 4-5
-Refer to Figure 4-5. The figure above represents the market for pecans. Assume that this is a competitive market. At a price of $9,

A) the marginal cost of pecans is greater than the marginal benefit; therefore, output is inefficiently low.
B) producers should lower the price to $3 in order to sell the quantity demanded of 4,000.
C) the marginal benefit of pecans is greater than the marginal cost; therefore, output is inefficiently high.
D) the marginal benefit of pecans is greater than the marginal cost; therefore, output is inefficiently low.