Fully explain why the answer is A and not C: If a U$.$S$.$ firm will need C$$200,000$ in $90$ days to pay for imports from Canada and it wishes to avoid the risk

from exchange rate fluctuations, it could:

a$.$ purchase a $90-$day forward contract on Canadian dollars.

b$.$ sell a $90-$day forward contract on Canadian dollars.

c$.$ purchase Canadian dollars $90$ days from now at the spot rate.

d$.$ sell Canadian dollars $90$ days from now at the spot rate.