In the above figure, the line represented by the "2" is the

The figure above illustrates the marginal private cost and the marginal social cost to the city of Seattle for each rock concert that is offered. If 5 concerts are put on, then the

A) marginal external cost will be greater than the marginal social cost. B) marginal external cost will be greater than the marginal private cost. C) marginal external cost will equal the marginal private cost. D) marginal social cost will equal the marginal external cost. E) marginal external cost will equal zero.

If the Herfindahl-Hirschman Index (HHI) among the firms in the long distance telecommunications market is equal to 855, when would the Federal Trade Commission probably challenge a proposed merger between any two of the firms?

A) It would challenge if the HHI would increase by more than 50 points. B) It would challenge if the HHI would increase by more than 100 points. C) It would challenge no matter what happened to the HHI because the market has so few firms. D) It would not challenge because the HHI is less than 1500.