Carla Company started operations on January 1, 2015, and has used the FIFO method of inventory valuation since its inception. In 2021, it decides to switch to the average-cost method. You are provided with the following information Retained Earnings (Ending Balance) Net Income Under FIFO Under Average-Cost Under FIFO 2015 $92,900 $82,500 $93,000 66,100 61,000 155,900 94,000 84,900 229,000 2016 2017 2018 2019 2020 129,900 350,700 119.900 296,700 294,400 285,700 539,200 717,200 298,900 (a) What is the beginning retained earnings balance at January 1, 2017. If Carla prepares comparative financial statements starting in 2017? Retained earnings, January 1 $ 10400 (b) What is the beginning retained earnings balance at January 1, 2020, if Carla prepares comparative financial statements starting in 2020? Retained earnings, January 1 $ (b) What is the beginning retained earnings balance at January 1, 2020, if Carla prepares comparative financial statements starting in 2020? Retained earnings, January 1 $ (c) What is the beginning retained earnings balance at January 1, 2021, if Carla prepares single-period financial statements for 2021? Retained earnings, January 1 $ (d) What is the net income reported by Carla in the 2020 income statement if it prepares comparative financial statements starting with 2018? 2018 2019 2020 Net Income 298900