A two$-$stock portfolio has an expected return of $12\mathrm{.}6\%.$ If Asset A has an expected return of $19\%$ and Asset $B$ has an expected return of $7\%,$ what is the weight on Asset A for this two$-$stock portfolio?

Multiple Choice

$0\mathrm{.}47$

$0\mathrm{.}61$

$0\mathrm{.}53$

$0\mathrm{.}72$