When Richard from New York Buys a Government of Canada

When Richard from New York buys a Government of Canada bond, the effect on the foreign exchange market is a

A) rightward shift of the demand curve for U.S. dollars.
B) leftward shift of the demand curve for Canadian dollars.
C) rightward shift of the supply curve of Canadian dollars.
D) rightward shift of the demand curve for Canadian dollars.
E) leftward shift of the supply curve of U.S. dollars.