Reference: 12-10
Harstin Corporation Has Provided the Following Data -Emiley Inc

Reference: 12-10
Harstin Corporation has provided the following data: $$\begin{array} { | l | r | } \hline \text { Sales } & \$ 625,000 \\\hline \text { Gross margin } & 70,000 \\\hline \text { Net operating income } & 50,000 \\\hline \text { Stockholders' equity } & 90,000 \\\hline \text { Average operating assets } & 250,000 \\\hline \text { Residual income } & 20,000 \\\hline\end{array}$$
-Emiley Inc., newly incorporated on January 2, earned $100,000 in net operating income in its first year of operations which ended December 31. Operating assets, which increased evenly throughout the year, totalled $200,000 at year end. ROI for the year was?

A) 0%.
B) 50%.
C) 200%.
D) 100%.