a$)$ The economic order quantity is $160160$ units $($round your response to the nearest whole$$ number$).$

Part $3$

$$b$)$ The annual holding cost is $$$$36003600($round your response to the nearest whole$$ number$).$

Part $4$

$$c$)$ The annual ordering cost is $$$$36003600($round your response to the nearest whole$$ number$).$

Part $5$

$$d$)$ The reorder point is enter your response here units$($round your response to the nearest whole$$ number$).$