What was the approximate value of the U.S. current account balance in 2011?

When a nation's national saving falls short of its domestic investment, it must be

A) experiencing a government budget surplus. B) experiencing a government deficit. C) a net lender to foreign nations. D) a net borrower from foreign nations.

If a firm experiences economies of scale, the average total cost of production increases as output expands

a. True b. False Indicate whether the statement is true or false