FIGURE 2- 4 -Refer to Figure 2- 4. If We Want to Know

Multiple Choice

FIGURE 2- 4
-Refer to Figure 2- 4. If we want to know the marginal response of "yield per acre" due to a change in "fertilizer applied per acre of wheat" at point B, then we should determine the

A) slope of a straight line tangent to point B.
B) quantity of fertilizer applied at point B.
C) slope of a straight line joining points B and C.
D) yield per acre at 30 units of fertilizer.
E) the slope of a straight line from the origin to point B.