The following information was available from the inventory records of Lily Co, for January Units 30 Unit Cost Total Cost Balance at January 1 $20 $300 Purchases: January 6 40 14 560 January 26 50 18. 900 Sales: January 7 January 31 (20) 88 (30) Assuming that Lily adopts periodic inventory system, what should be the inventory at January 31, using the weighted average method? (Round all unit costs to the nearest cent) $1.180.00 O $580.00 $860.00 O $1.026.90