An industry whose total output can be increased without a change in long-run per-unit costs is a(n)

If the exchange rate rises, then the quantity of dollars demanded ________ because with the higher U.S. exchange rate, U.S. exports ________

A) decreases; increase B) increases; decrease C) decreases; decrease D) increases; increase E) does not change; do not change

Comparative advantage is defined as

A) producing all goods at lower opportunity costs than other countries can. B) producing more output of all goods than anyone else can. C) producing one good at a lower opportunity cost than another country can. D) the ability to produce more output from given inputs than anyone else can.