There Is No Market Failure If

Multiple Choice

There is no market failure if

A) the marginal private cost curve is upward sloping.
B) the demand curve (for a good or service) is downward sloping.
C) the demand curve lies about the marginal private cost curve.
D) marginal private costs are greater than the external costs associated with a negative externality.
E) the market provides the idea or socially optimal amount of a good.