International Boot Company has operating income of $$80,000,$ invested assets of $$500,000,$ and sales of $$1,525,000.$

The profit margin $($rounded to one decimal place$)$ for International Boot Company is

a$.5\mathrm{.}2\%$

b$.16\mathrm{.}0\%$

c$.19\mathrm{.}1\%$

d$.33\mathrm{.}3\%$