The Following Figure Shows the Isoquants,IQ₁ and IQ₂,for a Competitive

Multiple Choice

The following figure shows the isoquants,IQ₁ and IQ₂,for a competitive firm.
Figure 16-1
-Refer to Figure 16-1.Which of the following is true at point C?

A) At point C,the marginal product of labor and capital is maximized.
B) Point C identifies the level of output that gives the firm the highest marginal revenue.
C) Point C identifies the least cost method of producing output Q₁.
D) Point C shows that the firm operates with constant returns to scale.