Kip started a wholesale store this year selling bulk peanut butter. in january of this year kip purchased an initial five tubs of peanut butter for a total cost of $5,000. in july kip purchased three tubs for a total cost of $6,000. finally, in november kip bought two tubs for a total cost of $1,000. kip sold six tubs by year-end. what is kip's ending inventory under the fifo cost-flow method?