The interest rate on a $1-$year Canadian bond is $4\mathrm{.}5\%.$ The current exchange rate is $C$

$$1=$ US $$0\mathrm{.}75.$ The $1-$year forward rate is $C$$$1=$ US $$0\mathrm{.}80.$ The return $($denominated in

US$$)$ that a U$.$S$.$ investor can earn by investing in the Canadian security is $\%.$

A$)11\mathrm{.}4$

B$)11\mathrm{.}5$

C$)11\mathrm{.}6$

D$)11\mathrm{.}7$