Costco has received the following demands for a product this year: Month 1 2 3 4 5 6 7 8 9 10 11 12 Demand 300 700 800 900 3300 200 600 900 200 300 1000 800 Suppose ordering cost (OC) is $504 and holding cost (HC) of one unit of product in a year is $3. There is no shortage cost. Backordering is not allowed in this model. To achieve the minimum total cost (ordering cost + holding cost), how many times the company should place orders in a year? In each order, how many products should be ordered? What is the total cost in a year?