Question 4: The records of Bryan Aviation include the following accounts for inventory of aviation fuel at December 31 of the current year: Inventory Jan 1 balance 740 units @ $7.50 Mar 6 purchase 320 units @ $7.80 Jun 22 purchase 8,380 units @ $8.10 Oct 4 purchase 530 units @ $9.10 5,550 2,496 67,878 4,823 Sales revenue Dec 31 9,030 units 128,226 Requirements 1. Prepare a partial Income Statement through gross profit under the average, FIFO, and LIFO methods. Round average cost per unit to four decimal places and all other amounts to the nearest whole dollar. 2. Which inventory method would you use to minimize income tax? Explain why this method causes income tax to be the lowest