Answer:
b.$6.00
Explanation:
The contribution margin is the difference between the sales and variable cost. The difference between the unit sales and unit variable cost thus gives the contribution margin per unit.
Total variable cost per unit includes both direct and indirect cost.
variable cost per unit = $1.50 + $1.20 + 0.90 + 0.40
= $4.00
contribution margin per unit
= $10.00 - $4.00
= $6.00