Required a. Compute the gross profit margin for each year, 2018 through 2020, and the inventory turnover ratio for 2019 and 2020. b. What amount for cost of goods sold and gross profit would Publix report in 2019 and 2020 if FIFO were used to assign cost c. Recalculate Publix's inventory turnover ratio for 2019 and 2020 assuming that FIFO had been used to value inventory