Great Value Company is planning to purchase a new machine costing P50,000 with freight and installation costs amounting to P1,500. The old unit is to be traded-in will be given a trade-in allowance of P7,500. Other assets that are to be retired as a result of the acquisition of the new machine can be salvaged and sold for P3,000. The loss on retirement of these other assets is P1,000 which will reduce income taxes of P400. If the new equipment is not purchased, repair of the old unit will have to be made at an estimated cost of P4,000. This cost can be avoided by purchasing the new equipment. Additional gross working capital of P12,000 will be needed to support operation planned with the new equipment. The net investment assigned to the new machine for decision analysis is

a. P52,600

b. P53,600

c. None of the above

d. P57,600

e. P50,20