2. There's the demand of certain product over 6 weeks. Suppose the setup cost for is $100, and the holding cost is $2 per unit per week. The lead time is 1 week. Beginning inventory is 10. Week Demand 1 40 2 50 a. Determine the optimal production plan by: (1) the EOQ lot sizing method; (2) the sliver-meal heuristic; 3 4 5 6 20 70 10 60 (3) the least unit cost method. b. Compare the results with the lot-for-lot method. Which method is the best?