Green Toys, a toy manufacturer in Cairo, Egypt, has the following master production plan:

Period (weeks) 1 2 3 4 5 6 7 8 9 10 11 12 Gross requirements 1,000 800 1,000 400 200 800 Lead time = 1 week; setup costs = E£2,000; holding cost = E£5 per unit per week; stockout cost = E£10 per unit per week. Develop an ordering plan and costs for Green Toys using the following techniques:

a) Lot-for-lot

b) EOQ

c) POQ

d) Which plan has the lowest cost?