Huang Company Reported the Following Information for the Current Year $\begin{array}{lr}\text { Sales } & \$ 400,000 \\\text { Average operating assets } & \$ 250,000\\\text { Margin }&10\%\end{array}$

Huang Company reported the following information for the current year: $\begin{array}{lr}\text { Sales } & \$ 400,000 \\\text { Average operating assets } & \$ 250,000\\\text { Margin }&10\%\end{array}$ The company's return on investment was: (Do not round intermediate calculations. Round your final answer to 2 decimal places.)

A) 10.00%.
B) 6.25%.
C) 16.00%.
D) Cannot be ascertained from the information provided.