Chade Corp. is considering a special order brought to it by a new client. If Chade determines the variable cost to be \($9\) per unit, and the contribution margin of the next best alternative of the facility to be \($5\) per unit, then if Chade has:

a. Full capacity, the company will be profitable at \($4\) per unit.

b. Excess capacity, the company will be profitable at \($6\) per unit.

c. Full capacity, the selling price must be greater than \($5\) per unit.

d. Excess capacity, the selling price must be greater than \($9\) per unit.