Please answer question 1, 3, 4! Thank you!

Question 1 (1 point) Saved In an order-up-to system, the order-up-to level should become higher when backorder becomes more expensive True False Question 3 (1 point) Saved Which of the following is NOT an assumption for applying the order-up-to policy to the example in the lecture a) The supplier's delivery lead time is consistent over time b) The product acquisition cost is proportional to the quantity delivered Oc) There is a significant overhead cost, regardless of how many ordered, associated with purchase order management (issuing, tracking, and invoice) d) The unmet demand is fully backordered Saved Question 4 (1 point) In a periodic-review inventory system, a) The cost for shipping can be lower than in a continuous review system b) The scheduling of production is more complex for the supplier than in a continuous-review inventory system c) Under normal conditions, the purchasing orders are issued at any time when the buyer finds necessary d) The system inventory is completely ignored between the review time