You are the sourcing manager and responsible for ordering raw materials (light crude, med crude, and recycled crude) from different suppliers (information see below Table 2). Table 2 Raw Material Name SKU Supplier Name Price per liter Ordering Cost Lead Time (days) Inventory Tracking System Light Crude R869920 GTA Light $ 12 $ 280 12 days Continuous Med Crude R869922 Petro Med $ 10 $ 150 14 days Continuous Recycled Crude R505111 Chem-environ $ 14 $ 300 25 days Period