4. Alpha Co. produces two products: Product A with $2 contribution margin and Product B with a $3 contribution margin. The company feels that increased marketing efforts can result in the sale of an additional 1,000 units for next year. The allocation of marketing efforts between Products A and B that will result in the greatest return would be: A. It makes no difference, as profits will increase if more of either product is sold. B. 1,000 units of Product A. C. 1,000 units of Product B. D. 500 units of Product A and 500 units of Product B. E. NONE OF THE ABOVE