Exhibit 31-5 -Refer to Exhibit 31-5.If a Positive Externality Exists,then Curve __________

Multiple Choice

Exhibit 31-5

-Refer to Exhibit 31-5.If a positive externality exists,then curve __________ represents the marginal social benefit curve and the area __________ represents the market failure.

A) 2; BDC
B) 1; ABC
C) 3; ABC
D) 2; ABC
E) 1; BDC