Which of the following is not an example of a market failure?

a) A monopoly produces the level of output for which MR = MC, but at this point P > MC.

b) Buyers of used cars are unable to distinguish good ones from lemons which results in lemons forcing all the good used cars out of the market

c) Jane is upset because there never seems to be anything she wants to watch on any of the television stations she receives.

d) Pollution from coal-fired power plants in the Midwest causes acid rain in the northeastern U. S.

e) Jim paying for a flu shot reduces the chances that he will get the flu and thus reduces the chances that other people will get the flu.