Rockwell Corporation uses a petiodic inventory system and has used the FiFO cost method since inception of the company in 1979, In 2021, the company decided to switch to the average cost method. Data for 2021 are as follows: Additional Information: a. The company's effectlve income tax rate is 25% for all years. b. If the company had used the average cost method prior to 2021 , ending inventory for 2020 would have been $177.600. c. 12.200 units remained in inventory at the end of 2021 Required: 1. Ignoring income taxes, prepare the 2021 journal entry to adjust the accounts to reflect the average cost method. 2. What is the effect of the change in methods on 2021 net income? What is the emfect of the charige in methods on 2021 net lncome