Madison Corporation Sells Three Products (M, N, and O) in the Following

Madison Corporation sells three products (M, N, and O) in the following mix: 3:1:2. Unit price and cost data are: $\begin{array}{lrrrr}&\text {M}&\text {N}&\text {O}\\\text { Unit sales price } & \$ 7 & \$ 4 & \$ 6 \\\text { Unit variable costs } & 3 & 2 & 3\end{array}$

Total fixed costs are $340,000.
-The contribution margin per composite unit for the current sales mix (round to the nearest cent) is:

A) $ 5.67.
B) $20.00.
C) $25.00.
D) $37.00.
E) $17.00.