Suppose that the yen-dollar exchange rate changes from 85 yen per dollar to 80 yen per dollar. One can say that the:
A.
Yen has appreciated against the dollar and the dollar has depreciated against the yen
B.
Yen has depreciated against the dollar and the dollar has appreciated against the yen
C.
Yen has appreciated against the dollar and the dollar has appreciated against the yen
D.
Yen has depreciated against the dollar and the dollar has depreciated against the yen