Which of the following is TRUE regarding the fixed-quantity ordering system? Inventory is ordered at the end of a given period. There is no physical count of inventory items after an item is withdrawn. There is a prespecified target level T. It is suitable when vendors make routine visits to customers to take fresh orders. The same fixed amount is added to inventory every time an order for an item is placed. Which of the following is TRUE regarding the fixed-quantity ordering system? Inventory is ordered at the end of a given period. There is no physical count of inventory items after an item is withdrawn. There is a prespecified target level T. It is suitable when vendors make routine visits to customers to take fresh orders. The same fixed amount is added to inventory every time an order for an item is placed