P6-72B. (Learning Objectives 2, 3: Applying the different inventory costing methods perpetual system) The records of Bryan Aviation include the following accounts for inventory of aviation fuel at December 31 of the current year: 23 a writing assignment 378 Chapter 6 Jan 1 Mar 6 Jun 22 Oct 4 Inventory Balance 740 units 7.50 5.550 Purchase 320 units 7.80 2,496 Purchase 8,380 units 08.10 67,878 Purchase 530 units 9.10 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