4.A shoe factory in surakarta requires 8 weeks of raw materials
in a row as follows: 30, 40, 50, 35, 60, 25, 40, and 30 units with a one-time order cost of Rp.55,000 and a storage fee of Rp. 100 per unit/week. (note: no stock in warehouse) From these data calculate the total cost of procurement using:
a. Lot For Lot (LFL) Method
b. Economic Order Quantity (EOQ) Method
c. Period Order Quantity (POQ) Method
d. In your opinion as an operations manager at the company which method would you choose? Tell, why?