The Supply of Canadian Dollars to the Foreign-Exchange Market,which Is

The supply of Canadian dollars to the foreign-exchange market,which is also the demand for foreign currency,is derived from

A) imports to Canada + capital inflows to Canada.
B) exports from Canada + capital outflows from Canada.
C) exports from Canada + capital inflows to Canada.
D) the Canadian government's holdings of official reserves.
E) imports to Canada + capital outflows from Canada.