This Graph Shows the Marginal Costs and Marginal Benefits Associated

Multiple Choice

This graph shows the marginal costs and marginal benefits associated with roadside litter clean up.Assume that the marginal cost and marginal benefit curves slope in the usual directions.
Refer to the information given above.Picking up the 20^th bag of litter would:

A) be efficient.
B) increase total economic surplus.
C) create deadweight loss.
D) be socially efficient,but would not be consistent with following self-interest motives.