A small business owner who is earning a positive economic profit, no matter how small, is doing better than if she sold her business and went to work for another firm

Which of the following is true?

i. In an unregulated market with an external benefit, consumers don't take it into account and consume less than the efficient quantity. ii. Marginal social cost equals marginal private cost minus marginal external cost. iii. An unregulated market produces more than the efficient quantity of a good with an external cost. A) Only i B) Only ii C) Only iii D) i and ii E) i and iii

A firm that holds a monopoly in both goods stands to gain from a tie-in sale

A) True. B) False. C) True, which is why anti-trust laws exist. D) False, there are no dual monopolies.