Capricorn Company's Records Reveal the Following Variable Costs Division Y Wants to Buy the Component from Division X

Capricorn Company's records reveal the following:
$\begin{array} { l }\text { Division X }\\ \text {Market price of finished component to outsiders }&\$ 32 \text { per unit } \\ \text {Variable costs per component }&\$ 24 \text { per unit } \\\text { Division Y }\\ \text {Sale price of finished product }&\$ 42 \text { per unit } \\\end{array}$

Variable costs:
$\begin{array}{ll}\text { Division } X(1 \text { component }) & ? \\\text { Division } Y \text { Assembly } & 9 \text { per unit } \\\text { Division } Y \text { Packaging } & 4 \text { per unit }\end{array}$
Division Y wants to buy the component from Division X.The variable costs of Division Y will be incurred whether it buys the component from Division X or from an outside supplier.Division Y can buy the component for $30 per unit from an outside supplier.Division X has no excess capacity.What is the highest price per unit that Division Y should pay to Division X for the components?

A) $22 per unit
B) $29 per unit
C) $30 per unit
D) $32 per unit