Dacker Products is a division of a major corporation. The following data are for the most recent year of operations:

Sales

Net operating income

Average operating assets

The company's minimum required rate of return

$$36,680,000$

$$2,908,960$

$$8,200,000$

$14\%$

The division's margin used to compute ROI is closest to:

Multiple Choice

$35\mathrm{.}5\%$

$30\mathrm{.}3\%$

$22\mathrm{.}4\%$

$7\mathrm{.}9\%$