The stock records of Bolt Company for January are as follows: 1 January Stock on hand of 20 000 units at $8 cost each = $160 000 12 January Purchase of 18 000 units at $10 cost each = $180 000 Sale of 12 000 units at $16 selling price each = $192 000 15 January 31 January Stock on hand of 26 000 units In accordance with perpetual last-in-first-out (LIFO): Select one: a. COGS = $192,000; Inventory at month end = $416 000 b. COGS = $107 368; Inventory at month end = $232 632 c. COGS = $96,000; Inventory at month end $244 000 O d. COGS = $120 000; Inventory at month end = $220 000