Elliot Company can sell all of its products A and Z that it can produce, but it has limited production capacity. It can produce 8 units of A per hour or 10 units of Z per hour, and it has 20,000 production hours available. Contribution margin per unit is $12 for A and $10 for Z. What is the most profitable sales mix for Elliot Company?

A. 84,000 units of A and 60,000 units of Z.
B. 48,000 units of A and 80,000 units of Z.
C. 60,000 units of A and 100,000 units of Z.
D. 120,000 units of A and 0 units of Z.
E. 0 units of A and 200,000 units of Z.