Need help with the following practice exercise Miguel owns a camera store; the customers' favorite model has an annual demand of 350 units. The cost of placing an order to replace inventory is $18 per order and the cost of holding one unit in inventory per year is $15. Assume the store is open 350 days per year. A. What is the optimal order quantity? B. What is the number of orders per year? C. What is the number of days between orders? D. What is the cost of ordering? E. What is the cost of holding a unit in inventory? F. What is the total cost