1. Macs Caf uses a perpetual inventory system. The records reflected the following for January 2018: Units Unit Costs Beginning inventory 1,000 $55 Purchase, January 6 1,500 60 Purchase, January 14 1,100 62 Units Sale, January 5 ($100 per unit) 800 Sale, January 12 (at $120 per unit) 1,200 Sale, January 15 (at $120 per unit) 1,000 a. Compute the Cost of Goods Sold, Ending Inventory, and Gross Profit for January using FIFO, LIFO and Average Cost. Show all work and label amounts. For Average Cost, round units costs to 2 decimal places and all other amounts to the nearest dollar. b. Repeat your calculations assuming Macs Caf uses a periodic inventory system. For Average Cost, round unit costs to 4 decimal places and all other amounts to the nearest dollar. c. If Macs desires to report the lowest profit to save on taxes, which method do you recommend?