there are multiple questions please explain

By employing the center-of-gravity method and using the table below which includes material volume shipped from a factory to 4 retail outlets, find the optimal location for the factory. RETAIL OUTLET LOCATION COORDINATES XX MATERIAL MOVEMENT 1 18,6 1,500 2 12, 15 2,100 3 4 10,7 1,900 6,5 1,200 For this collection of center-of-gravity data, choose the correct answer among the choices provided. O a. Cx is less than 10.00 and Cy is more than 10.00. Ob.Cx is less than 10.00 and Cy is less than 10.00. O c. Cx is more than 10.00 and Cy is more than 10.00. O d.Cx is more than 10.00 and Cy is less than 10.00. Which of the following product or service characteristics is not appropriate for efficient supply chains? a. Stable product lines. O b.long lifecycles that do not change frequently O c. Low contribution margins. O d. Demand is unpredictable. Which of the following is not a supply chain design decision? O a. Sourcing O b. Sustainability O c. cost management O d. Strategy