Shown below is activity for one of the products of Denver Office Equipment: January 1 balance, 520 units @ $50 per unit $26,800 Purchases: January 10: 520 units @ $55 per unit January 20: 1,840 units @ $59 per unit Sales: January 12: 780 units January 28: 770 units Required: Compute the January 31 ending inventory and cost of goods sold for January, assuming Denver uses FIFO. Ending inventory Cost of goods sold