You have $$21,212\mathrm{.}12$ to invest in a stock portfolio. Your choices are Stock X with an expected return of $18\mathrm{.}22\%$ and Stock Y with an expected return of $9\mathrm{.}00\%.$ Your goal is to create a portfolio with an expected return of $16\mathrm{.}00\%.$ If all of your money must be invested, what percentage of your $$21,212\mathrm{.}12$ will be invested in Stock X$?$ a$.87\mathrm{.}82\%$ b$.12\mathrm{.}18\%$ c$.15\mathrm{.}92\%$ d$.24\mathrm{.}08\%$ e$.$ None of the above is within $1\%($e$.$g$.,100$ basis points$)$ of the percentage that must be invested in Stock X