160 unites were on hand

Begin Inventory Purchase Purchase Total 1/1/19 1/15/19 1/28/19 Units 200 100 100 400 Per unit price $5.00 5.30 5.50 Total $1,000 530 550 $2,080 1a. What is the cost of goods sold using FIFO? 16. What is cost of goods sold using LIFO? 1c. What is cost of goods using weighted average? 1d. Which costing method will result in the highest operating income and why