Suppose the Exchange Rate Is Such That in Toronto $1

Suppose the exchange rate is such that in Toronto $1 equals €1, but in Paris $1 equals €0.9.Where would an arbitrageur buy and sell Canadian dollars and euros?  

A)  An arbitrageur would sell euros in Toronto and buy Canadian dollars in Paris. 
B)  An arbitrageur would sell euros in Paris and buy Canadian dollars in Toronto. 
C)  An arbitrageur would sell euros in Toronto while buying them in Paris. 
D)  An arbitrageur would sell euros in Paris while buying them in Toronto.