The Figure Given Below Represents an Imperfectly Competitive Resource Market

The figure given below represents an imperfectly competitive resource market. Here common land (and not land used for specific purpose) is under consideration.Figure 18.1

-In Figure 18.1, the curve A indicates:

A) demand curve for land.
B) supply curve of land.
C) marginal factor cost of land.
D) marginal revenue product curve for land.
E) value of marginal product curve of land.