Shown below is activity for one of the products of Denver Office Equipment: January 1 balance, 510 units @ $60 per unit $30, 600 Purchases: January 510 units @ $65 per unit 10: January 1,020 units @ $69 per unit 20: Sales: January 810 units 12: January 760 units 28: Required: Compute the January 31 ending inventory and cost of goods sold for January, assuming Denver uses LIFO and a periodic inventory system. Ending inventory Cost of goods sold