2. Product A is an end item and is made from three units of B, three units of C and two units of D. B is made of three units of E and two of F. C is made of two units of F and one of D. A and B have a lead time of one week. C and D have lead times of two weeks, and E and F have lead times of three weeks. Lot sizes for A, B and D are L4L. Item C has a lot size of 60. E and F have a lot size of 100. There is 50 units of item B on hand, and 30 units of item A. There is a scheduled receipt for 50 units of item F in week three. a. Show the bill of materials (product structure tree) b. If 125 units of A are required in Week 8, develop the MRP planning schedule, specifying when items are to be ordered and received. PLEASE SHOW ALL WORKING