Bodego Inc. has an operating leverage of $5\mathrm{.}1.$ If the company's sales increase by $12\%,$ its net operating income should increase by about:

Multiple Choice

$47\mathrm{.}6\%$

$12\mathrm{.}0\%$

$61\mathrm{.}2\%$

$2\mathrm{.}4\%$