You have a portfolio that is invested $21$ percent in Stock A$,36$ percent in Stock B$,$ and $43$ percent in Stock C$.$ The betas of the stocks are $\mathrm{.}74,1\mathrm{.}29,$ and $1\mathrm{.}58,$ respectively. What is the beta of the portfolio?

Multiple Choice

$1\mathrm{.}20$

$1\mathrm{.}30$

$1\mathrm{.}25$

$1\mathrm{.}07$

$1\mathrm{.}46$