Which of the Following Statements Is True About the Supply

Which of the following statements is true about the supply curve for the Canadian dollar?

A) It is downward-sloping because a lower price for the dollar means Canadian goods are cheaper to foreigners.
B) It is downward-sloping because a higher price for the dollar means Canadian goods are cheaper to foreigners.
C) It is upward-sloping because a lower price for the dollar means foreign goods are cheaper to Canadians.
D) It is upward-sloping because a higher price for the dollar means foreign goods are cheaper to Canadians.