Which of the following approaches should be used to compare four investment alternatives? O A. differential approach B. payback method O c. total project approach OD. sensitivity analysis Thompson Company currently produces 10,000 units of a key part at a total cost of $512,000 annually. Annual variable cos annual fixed costs, $140,000 relate specifically to this part. The remaining fixed costs are unavoidable. Another manufacturer has offered to supply the part for $48 per unit. The facilities currently used to manufacture the part a new product with an expected contribution margin of $60,000 annually. Alternatively, the facilities could be rented out at Thompson Company makes the part, what is the annual opportunity cost of the facilities? O A. $70,000 B. $60,000 OC. $28,000 D. $13,000 a