If a firm has constant returns to scale, then doubling all of its inputs will just double its output

Suppose that prices in the United States rise relative to prices in Japan. We expect that

A) the dollar will appreciate and the yen will depreciate. B) the dollar will depreciate and the yen will appreciate. C) both the dollar and the yen will appreciate. D) both the dollar and the yen will depreciate.

The U.S. public debt:

A. refers to the debts of all units of government—federal, state, and local. B. consists of the total debt of U.S. households, businesses, and government. C. refers to the collective amount that U.S. citizens and businesses owe to foreigners. D. consists of the historical accumulation of all past federal deficits and surpluses.