An American investor purchased CAD to invest in Treasury bill for $180$ days and he booked a $180-$day forward contract to sell the CAD against the USD. Select the answer that explains the investor$$s decision.

A$.$ The investor has sold the USD and he will buy them back at a forward premium superior than the rate differential of the two currencies.

B$.$ The investor has a CIA giving him a premium greater than the interest rate differential of the two currencies.

C$.$ The investor has invested in the currency giving the highest interest rate and he will sell back the CAD at a discount forward rate.

D$.$ The investor has invested in the currency giving the lowest interest rate, he will buy back the CAD at a forward rate greater than the spot rate.