Q1 [20 Marks) (a) What do you understand by aggregate planning? How does it differ from master production schedule (MPS)? (3 Marks) (b) With a diagram show the typical level (focus) of MPS for make-to-stock (MTS), assemble-to-order (ATO) and make-to-order (MTO) strategies. State the basis of selection of the typical level. (3 Marks) (c) A partially completed MPS record for a subassembly is presented in Table 1. Table 1 Partially completed MPS record for the subassembly Quantity on hand : 25 Order policy: 60 units Lead time: 1 week Weeks 2 3 4 5 6 7 Forecast 40 40 40 40 30 30 50 Customer orders (booked) 60 45 30 35 10 5 5 Projected on-hand inventory MPS quantity MPS start Available to promise (ATP) 8 50 0 (i) Reproduce Table I and fill up the blank cells with appropriate numbers. (4 Marks) (ii) Suppose that the following orders as shown in Table 2 (in the order of their arrival) are received for the above subassembly. Decide which one to accept or to reject based on the sequence of arrival. (4 Marks) Table 2 Record of orders received for the subassembly. Order requested Amount (units) Week needed 1 15 2 2 30 4 3 25 3 4 75 7 (iii)Identify the orders you would accept for shipment. Justify your decision. (6 Marks)