The Aggregate plan for a product family and the percentage share of units sold for each SKU are given as follow. How many units of product E has to be produced in period 4? Period,t No. Hired No. Laid Off Workforce Size Overtime (hours) Inventory Stockout, Subcontract Total Production Demand 0 0 0 80 0 1,000 0 0 0 16 64 0 2,560 0 0 2,560 1,000 2 0 0 64 0 2.120 0 0 2,560 3,000 3 0 0 64 0 880 0 0 2.560 3,800 4 0 0 64 0 0 1,220 140 2.560 4,800 0 0 64 0 0 660 0 2,560 2,000 6 0 0 64 0 500 0 0 2,560 1,400 Family % share of units sold A 30 B 10 10 D 10 20 F 15 O 512 O We need the hours per month per worker to answer the question. O 20 O 2560