$$\text { Reference: } 12 - 10$$ Harstin Corporation Has Provided the Following Data

$$\text { Reference: } 12 - 10$$ Harstin Corporation has provided the following data: $$\begin{array} { | l | r | } \hline \text { Sales } & \$ 625,000 \\\hline \text { Gross margin } & 70,000 \\\hline \text { Net operating income } & 50,000 \\\hline \text { Stockholders' equity } & 90,000 \\\hline \text { Average operating assets } & 250,000 \\\hline \text { Residual income } & 20,000 \\\hline\end{array}$$
-For purposes of determining the costs to be included in each segment's performance evaluations, in general common fixed costs should be allocated to each segment and traceable fixed costs should not be assigned to segments.