1. (L.O. 1) De Lacey Co. began operations on January 1, 2018, and uses the average cost method of pricing inventory. Management is going to change to the FIFO method for 2021. The following information is available for the years 2018-2021. 2018 2019 2020 2021 Instructions (ignore all tax effects): Net Income Average Cost Method FIFO Method $135,000 $138,000 142,000 147,000 163,000 167,000 172,000 177,000 a. Prepare the journal entry necessary to record a change from the average cost method to the FIFO method in 2021. b. Determine net income to be reported for 2018, 2019, and 2020, after giving effect to the change in accounting principle