The following information is available for October for Barton Company. Beginning inventory $150,000 Net purchases 450,000 Net sales 900,000 Percentage markup on cost 66.67% A fire destroyed Bartons October 31 inventory, leaving undamaged inventory with a cost of $9,000. Using the gross profit method, the estimated ending inventory destroyed by fire is a. $51,000. b. $231,000. c. $240,000. d. $300,000.