In the Graph, the Difference Between Points D and E

Multiple Choice

In the graph, the difference between points d and e indicates that at $50M of R&D spending, the

A) marginal cost is greater than the marginal benefit. Thus, R&D spending should be reduced.
B) marginal cost is less than the marginal benefit. Thus. R&D spending should be reduced.
C) marginal cost is greater than the marginal benefit. Thus, R&D spending should be increased.
D) marginal cost is less than the marginal benefit. Thus, R&D spending should be increased.