A firm's average total cost is $60, its average variable cost is $30, and its total fixed cost is $600. Its output is

Which of the following statements is true?

A) Although consumers reap some consumer surplus under a single-price monopoly, society is better off with optimal two-part tariff pricing. B) Of the three pricing schedules, single-price monopoly, an optimal two-part tariff, and perfect price discrimination, profit is highest under single-price monopoly pricing. C) Consumer surplus under perfect price discrimination is greater than under single-price monopoly pricing. D) Consumer surplus under an optimal two-part tariff is greater than that under single-price monopoly pricing.

Which is a good example of an increase in total factor productivity?

A) a tax cut B) good weather C) a company reducing its workforce D) better credit conditions