Final answer:
The incorrect statement is D. The unit contribution margin would exclude fixed product costs. The unit contribution margin is calculated by subtracting the unit variable cost from the sales price and includes both variable and fixed costs.
Step-by-step explanation:
The incorrect statement is D. The unit contribution margin would exclude fixed product costs.
The unit contribution margin is calculated by subtracting the unit variable cost from the sales price. It represents the amount from each unit sale that contributes towards covering fixed costs and generating operating income. It includes both variable and fixed costs.