Muscat Company has the following inventory information Units Per unit price Total July 1 Beginning Inventory 20 units at OMR 19 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 620 b. OMR 580 c. OMR 1,400 d. OMR 600 e. None of the answers are correct