Over the past decade, the United States has had a current account deficit and capital account deficit

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.

Using Figure 1 above, if the aggregate demand curve shifts from AD1 to AD2 the result in the long run would be:

A. P1 and Y2. B. P2 and Y2. C. P3 and Y1. D. P2 and Y3.