The time-phased net requirements for the base assembly in a table lamp over the next six weeks are: Week 1 2 3 4 5 6 Requirements 335 240 180 340 320 200 The setup cost for the construction of the base assembly is $200, and the holding cost is $0.30 per assembly per week. a. What lot sizing do you obtain from the EOQ formula? b. Determine the lot sizes using the Silver-Meal heuristic. c. Determine the lot sizes using the least unit cost heuristic.