Muscat Company has the following inventory information. Units Per unit price Beginning Inventory 20 units at OMR 19 Total July 1 7 Purchases 70 units at OMR 20 22 Purchases 10 units at OMR 22 The physical inventory count on July 31 shows 30 units on hand. Using the average-cost method, what is the value of ending inventory? Select one: a. OMR 1,400. b. OMR 600 c. None of the answers are correct d. OMR 580. e. OMR 620