According to the Interest Parity Condition, the Only Way to Keep

According to the interest parity condition, the only way to keep exchange rates constant is for policy makers to:

A) adjust their economic policies to satisfy the interest parity condition, regardless of any other policy objectives they might have.
B) resolutely stick to their policies no matter what happens to interest rates, prices, or economic conditions elsewhere in the world.
C) intervene in the foreign exchange markets whenever the exchange rate begins to change.
D) ignore people's expectations and continue doing whatever they were doing.