The variance of the annual returns for the Jet Blue Airlines and Chick$-$Fil$-$Stocks are $0\mathrm{.}2064$ and $0\mathrm{.}1057,$ respectively. The covarinace between the annual returns on these two stocks is $0\mathrm{.}0819.$ If the porftfolio consists of $70$ percent Jet Blue Airlines stock and $30$ percent Chick$-$Fil$-$A stock, the portfolio covariance is$?$

Answer choices:

A$)\mathrm{.}14235$

B$)\mathrm{.}14965$

C$)\mathrm{.}14737$

D$)\mathrm{.}14504$