Which of the Following Is True Regardless of How the Exchange

Which of the following is true regardless of how the exchange rate is defined?

A) when a currency appreciates, that country's exports become less expensive to foreign buyers
B) when a currency appreciates, the bilateral exchange rate falls
C) when a currency depreciates, each unit buys less foreign currency
D) when one currency depreciates, all other currencies tend to depreciate at the same time
E) when the exchange rate rises, the domestic currency is appreciating