just part c please

Bonita Company manufactures and sells three products. Relevant per unit data concerning each product are given below. \begin{tabular}{|lrrr|} \hline & A & B & C \\ \hline Selling price & $10 & $15 & $18 \\ \hline Variable costs and expenses & $6 & $11 & $15 \\ \hline Machine hours to produce & 2 & 1 & 2 \\ \hline \end{tabular} Compute the contribution margin per unit of limited resource (machine hours) for each product. (Round contribution margin per unit to 2 decimal places, c.g. 1.50.) What is the total contribution margin if the additional hours are (1) divided equally among the products, and (2) if they are allocated entirely to the product identified above