Please answer all 5 questions. Thank you

Backorders happen when a customer is lost due to insufficient inventory. True O False EOQ models can be used when the variability coefficient is greater than 0.2. O True False For the EOQ model with quantity discount, EOQ is called admissible if it lies outside its price break interval. O True O False Power-of-two policy is used to when there are more than one product to order. O True O False Continuous rate EOQ model is used to find the optimal amount that a company has to produce in every cycle. True O False