QUESTION III. The product trees of A and D products produced by a consumer are given in the figure below, and the main production plan of the products is given in the table below. The holding cost for all products and parts is 2pb/ piece-week and the setup cost is 30pb. Unit production costs and lead times for products and parts are as follows: There are pre-ordered orders for parts B and C with a certain delivery date. The quantities and delivery dates of these orders are given below. At the beginning of the first week, there are 150 of product A, 200 of product D, 300 of part B and 400 of part C in stock. Fill in MRP tables for all products and parts using the methods outlined below. Calculate the total cost of production by including all products and parts for each method used. a) Lot for Lot b) Fixed Order Quantity (for 500 and 750 units) c) Economic order quantity