Suppose that production planning is to be done for the next 5 months, where the respective demands are r1 = 2, r2 = 4, r3 = 2, r4 = 2, and r5 = 3. The setup cost is $4,000, the unit production cos is $1,000, and the unit holding cost is $300. Use the deterministic periodic-review model to determine the optimal production schedule that satisfies the monthly requirements.