please answer the questions that say "select" not just the ones already answered

Southeast Soda Pop, Inc., has a new fruit drink for which it has tigh hopes. John Mittenthal, the production planner, has assembled the following demand forecast: Q1 1,800,Q21,100,Q31,600,Q4900 John's job is to develog an aggegate plan. The three initial options he wants to evaluate are: 3. Plan A: a strategy that hires and fires personnel as necessary to oroduce the current period's forecast. Indude any costs due to the chanse in the production If from the previous output level. Totat cost $ What was the total inventary holding cost? b. Plan B: a level stratesv. producing an average demand rate. Include any costs due to the chanae in the production level from the previaus output level. Cost Was there a need to back-order units? If sa. how many units and what was the total back-orde cost? c. Ptan Cia level strategy that produces 1,200 cases per quarter and meets the forecast demand with inventory and subcontracting (your subcontroctor only has ts capacity to fill a maximum of 300 units per quarten). Include any costs due to the change in the production level from the previous output level. Total Cost - 5 d. Which strategy is the lowest-cost plan