Shown below is activity for one of the products of Denver Office Equipment: January 1 balance, 650 units @ $60 per unit $39,000 Purchases: January 10: 650 units @ $65 per unit January 20: 1,020 units @ $70 per unit Sales: January 12: 900 units January 28: 790 units 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