Agustin Industries is a division of a major corporation. Data concerning the most recent year appears below:

Sales $ $18,210,000$

Net operating income $ $637,350$

Average operating assets $ $4,250,000$

The division's margin is closest to:

Multiple Choice

$15\mathrm{.}0\%$

$16\mathrm{.}2\%$

$19\mathrm{.}7\%$

$3\mathrm{.}5\%$