A Company Sells Two Products with Information as Follows

A company sells two products with information as follows: The products are machine-made.Four units of Product A can be made with one machine hour and two units of Product B can be made with one machine hour.The company has a maximum of 3,000 machine hours available per month.
-The company can sell up to 7,000 units of Product A per month,and up to 3,000 units of Product B for the month.What is the maximum amount of contribution margin that the company could earn in a month given the stated constraints?

A) $10,000
B) $36,000
C) $30,000
D) $40,000