This Graph Illustrates the Marginal Cost,marginal Private Benefit,and Marginal Social

Multiple Choice

This graph illustrates the marginal cost,marginal private benefit,and marginal social benefit of immunization against a contagious childhood disease.
Private market incentives would result in ___ children being immunized.The socially optimal number of children immunized is ____.

A) 100;150
B) 150;100
C) 100;300
D) 300;500