The Following Figures Show the Demand and Supply of Labor

The following figures show the demand and supply of labor in two different types of labor market. Figure 29.5 In the figures,
D: Demand curve for labor
S: Supply curve of labor
MRP: Marginal revenue product
MFC: Marginal factor cost
The Market A described in Figure 29.5 is a(n) :

A) monopsonist market.
B) monopolistic market.
C) perfectly competitive labor market.
D) monopolistically competitive market.
E) oligopolistic market.