How would I do the calculations without the production rate? Is it possible to solve mathematically? Please answer, need it urgently.

And other data for David Vas Mandacturing as the following demand met next four periode Quarter Forecast 1 3400 1200 3 1680 COSTS OTHER DATA Previous quarter's output - 1.300 cases Beginning inventory cases Stock out - 550 per case Inventory holding cost530 percet end of Quarter Hring employees S40 perce Terminating employees 580 perce Subcontracting cost 56 percase Unit cost on regular time $30 percase Overtime cost $15 extra percase Capacity on regular time 1.800 cames per quarter The three initial option she wants to evaluate re Plan d a strategy that hires and fres personnel as necessary to meet the forecast Plant: a level strategy Puna level strategy that produces 1.350 cases per unter and meets the forecast demand with inventory and subcontracting a) Which strategy the lowest cost plan? b) If you are the Operations Manager, which pian do you mplement and why