True or false. Under the fixed time period model, the order quantity is fixed and an assessment whether to order is made at a fixed time period. (3 points) True False True or false. A purchase resulting from the fixed order quantity model is triggered when inventory is reduced to a pre-calculated restocking point. ( 3 points) True False True or false. Under the fixed order quantity model, the quantity ordered is fixed but the frequency of ordering is variable. ( 3 points) True False True or false. Under the fixed time period model, the order quantity is fixed and an assessment whether to order is made at a fixed time period. (3 points) True False True or false. A purchase resulting from the fixed order quantity model is triggered when inventory is reduced to a pre-calculated restocking point. ( 3 points) True False True or false. Under the fixed order quantity model, the quantity ordered is fixed but the frequency of ordering is variable. ( 3 points) True False