A firm has fixed operating costs $of$ $$650,000,$ a sales price per unit $of$ $$20,$ and a variable cost per unit $of$ $$13.At$ a base sales level $of500,000$ units, the firm's degree $of$ operating leverage $is$:

Question $2$Select one:

$a.$

$1\mathrm{.}07.$

$b.$

$1\mathrm{.}11.$

$c.$

$1\mathrm{.}18.$

$d.$

$1\mathrm{.}23.$

$e.$

$1\mathrm{.}62.$