Joe Burrow, Inc. engaged in the following inventory transactions this period: Date Purchase Beg. 50 Units @ $20 cost each 1/10 1/15 35 Units @ $18 cost each 1/20 1/25 20 Units @ $16 cost each Sale 40 Units @$35 retail each 25 Units @ $35 retail each Using a periodic approach, What is Burrow's January 31 ending inventory using LIFO? O $680. O $1,150. O $800. O $1,270.