The beta of an all equity firm is $1\mathrm{.}25.$ If the firm changes its capital structure to $50\%$ debt and $50\%$ equity, using $6\%$ debt financing, then what will be the beta of the equity of the levered firm? Use a tax rate of $40\%.$

$1\mathrm{.}654$

$1\mathrm{.}750$

$2\mathrm{.}00$

$1\mathrm{.}864$

$1\mathrm{.}571$