Answer questions 4-5 based on the following information. Regular production capacity is 40 units per period, and overtime production capacity is 10 units per period. Assume that subcontracting is not available. Given the following data, develop an aggregate plan using the level strategy that achieves the minimum total cost. One can use overtime, inventory. together with regular production, to fulfill the demand (not necessarily all of them). The beginning inventory for the first period is zero. Backlog (backorder) is NOT allowed. The ending inventory for the last period should be zero. Period 1 2 3 4 5 6 Demand Forecast 40 40 40 50 60 70 Costs Regular Time $5/unit Overtime $10/unit $1/unit/period Inventory on average inventory Question 4 1 pts Based on the level strategy, what should be the amount of overtime production in month 1? None of the answers is correct OO 10 20 Question 5 1 pts Based on the level strategy, what is the ending inventory in month 4? $30 $10 $40 None of the answers is correct $20