8. A shipment of parts valued at $175,000 needs to be shipped from A to B place. They could be shipped by rail, taking 15 days at a cost of $1,525, or by truck, taking 4 days at a cost of $2,640. The annual holding cost rate for this type of item has been estimated at 29%. What option is more economical? (8 Points) 9. Consider the following data table (12 Points) Annual demand 2.500 Holding cost per year $ 1.50 Order cost per order S 18.75 Lead time 2 days Working days per year 250 a) Calculate the economic order quantity (ECO)? b) What is the reorder point? 10. Each X requires 4 of component Y and 2 of part W. Each Y requires 7 of Z. Each W requires 1 of Q and 2 of R. Lead times are X4 week, Y-1 week, W-4 weeks, R-3 week, Z-1 weeks, and Q - 3 weeks. (10 Points) a. Construct the time-phased product structure, b. Construct the bill of material