3. SA began operations on January 1, 2016, and uses the average-cost method of pricing inventory. Management is contemplating a change in inventory methods for 2019. The following information is available for the years 2016-2018. (3 Marks) Net Income Computed Using Average-Cost Method FIFO Method 2016 16,000 19,000 2017 18,000 21,000 2018 20,000 25,000 Required: (Ignore all tax effects.) a. Prepare the journal entry necessary to record a change from the average cost method to the FIFO method in 2019. b. Determine net income to be reported for 2016, 2017, and 2018, after giving effect to the change in accounting policy