uppose you invest in $130$ shares of Merck $($MRK$)$ at $$40$ per share and $100$ shares of Yahoo $($YHOO$)$at $$25$ per share. If the price of Merck increases to $$45$ and the price of Yahoo decreases to $$22$ per share, what is e return on your portfolio?

A$.6\mathrm{.}14\%$

B$.13\mathrm{.}64\%$

C$.7\mathrm{.}27\%$

D$.4\mathrm{.}55\%$