Task 3: Sask Trailers assembles different types of small camping trailers demanded between January and June of each year. The demand generally peaks in April and May. Next year's aggregate demand forecast beyond the regular capacity is given in the following table: requirements. Each temporary worker can produce 15 units per month. Hiring/training cost is approx. $1,000 per temp worker. Inventory holding cost per camping trailer per month is $50, charged to average inventory level during a month. Before January, there are no camping trailers on hand. 330 extra units are desired in inventory at the end of June. Any shortage during a period is backordered at a cost of $150 per camping trailer per month. [10 Marks] a) Develop a level aggregate plan and calculate the total cost. b) Develop a chase aggregate plan and calculate the total cost. [Ending inventory of 330 units in June is also desired with