4. Fields Company currently manufactures one of its parts at a cost of $3.25 per unit. This cost is based on a normal production rate of 50,000 units. Variable costs are $2.10 per unit, fixed costs related to making this part are $40,000 per year, and allocated fixed costs are $45,000 per year. Allocated fixed costs are unavoidable whether the company makes or buys the part. Fields is considering buying the part from a supplier for a quoted price of S2.80 per unit guaranteed for a three-year period. Should the company continue to manufacture the part, or should it buy the part from the outside supplier? Support your answer with analyses