The Mad Hatter Company owns a machine that manufactures two types of chimney caps. Production time is 0.20 hours for cap A and 0.40 hours for cap B. The machine's capacity is 2,000 hours per year. Both products are sold to a single customer who has agreed to buy all of the company's output up to a maximum of 1,000 units of cap A and 6,000 units of cap B. Selling prices and variable costs per unit are shown below. Based on this information, what is Mad Hatter's most profitable sales mix?

	Cap A	Cap B
Selling price per unit	$ 80	$ 60
Variable costs per unit	53	42

a.10,000 units of cap A.

b.5,000 units of cap B.

c.1,000 units of cap A and 5,000 units of cap B.

d.1,000 units of cap A and 6,000 units of cap B.

e.1,000 units of cap A and 4,500 units of cap B.