Grace Greenberg, production planner for Science and Technology Labs, in New Jersey, has the master production plan

Question:

Grace Greenberg, production planner for Science and Technology Labs, in New Jersey, has the master production plan shown below:
Period ( weeks) 1 2 3 4 5 6 7 8 9 10 11 12
Gross requirements 35 40 10 25 10 45
Lead time = 1 period; setup costs = $ 200; holding cost = $ 10 per week; stock out cost = $ 10 per week. Develop an ordering plan and costs for Grace, using these techniques:
a) Lot- for- lot.
b) EOQ.
c) POQ.
d) Which plan has the lowest cost?