The Copy Department in the College of Business at State

The Copy Department in the College of Business at State University provides photocopying service for both the Marketing and Economics Department.The following budget has been prepared for the year. $$\begin{array} { | l | l | } \hline \text { Available capacity } & 6,000,000 \text { pages } \\\hline \text { Budgeted us age: } & \\\hline \text { Marketing } & 3,600,000 \text { pages } \\\hline \text { Economics } & 1,800,000 \text { pages } \\\hline \text { Cost equation } & \$ 120,000 + \$ 0.025 \text { per page } \\\hline\end{array}$$ If the Copy Department uses a dual rate for allocating its costs based on usage,how much cost will be allocated to the Economics Department?

A) $85,000.
B) $90,000.
C) $105,000.
D) $120,000.