PhotoMix Corporation Produces Three Products $\begin{array}{lr}\text { Total Fixed costs } & \$ 2,400 \\\text { Tax rate } & 40 \%\end{array}$

PhotoMix Corporation produces three products. Cost, price, and volume data is shown below: $\begin{array}{lr}\text { Total Fixed costs } & \$ 2,400 \\\text { Tax rate } & 40 \%\end{array}$

$\begin{array}{lrrr}&\text { Picture } & \text { Candle } & \text { CD } \\&\text { Holders } & \text { Holders } & \text { Holders } \\\hline\text { Normal volume } & 300 & 150 & 200 \\\text { Price per unit } & \$ 5 & \$ 7 & \$ 10 \\\text { Variable cost per unit } & 2 & 3 & 4\end{array}$ The weighted average contribution margin per unit, rounded to the nearest cent, is:

A) $3.00
B) $4.00
C) $4.15
D) $6.00