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

Multiple Choice

Exhibit 31-5

-Refer to Exhibit 31-5. If a positive externality exists,then the external benefits associated with the positive externality equal the distance between points ____________ and the socially optimal output is

A) C and A; Q₁.
B) D and B; Q₁.
C) D and B; Q₂.
D) A and B; Q₂.