Q1. Prestige, Inc. needs an aggregate plan for its product line. As part of trying to maintain a lean production system, management prefers a constant workforce, no overtime, and constant production level while also minimizing safety stock. Relevant data follows: The sales forecast for next year is: Other assumptions: - Inventory holding costs are not charged for safety stock. - Safety stock is never produced using overtime. - Even though the production time is 7.5 hours per day, workers are paid for 8 hours per day. - Worker hires or layoffs take effect on the first day of the plan month. - Backorders are carried over month-to-month