11. (11 pts) A company manufactures two types of shirts. Shirt A sells for $17 dollars and the price for shirt B is $21. Let x and y be the number of shirts A and shirts B the company is selling in thousands of shirts. Let the Cost function be given : C(x, y) =4x2 - 4xy + 2y' - 11x + 25y - 3. auto inuomis a) Find the Revenue Function from selling x (thousand) shirt A and y (thousand) shirt B. cig manixsm b) Find the Profit Function. c) Find the amount of each type of shirts that should be produced and sold to maximize Profit. (Use the D-Test!) d) Find the maximum profit