Curtis Corporations contribution margin is $20 per unit for Product A and $24 for Product B. Product A requires 2 machine hours and Product B requires 4 machine hours. How much is the contribution margin per unit of limited resource for each product?

A B

a. $10.00 $6.00

b. $10.00 $6.66

c. $8.00 $6.00

d. $8.00 $6.66