The plan is called plan A. per unit. The cost of laying off workers is $80 per unit. Evaluate this plan. (Enter all responses as whole numbers.) Note: Both hiring and layoff costs are incurred in the month of the change. For example, going from 1,600 in January to 1,200 in February incurs a cost of layoff for 400 units in February. The total cost of hirings = (Enter your response as a whole number.) The total cost of layoffs =$ (Enter your response as a whole number.) The total inventory carrying cost =$ (Enter your response as a whole number.) The total stockout cost =$. (Enter your response as a whole number. . The total cost, excluding normal time labor costs, is = (Enter your response as a whole number.)