During 2021, Heller, Corporation discovered that the ending inventories reported on its financial statements were incorrect by the following amounts: 2019 $120,000 understated 2020 $150,000 overstated Heller uses the periodic Inventory system to ascertain year-end quantities that are converted to dollar amounts using the FIFO cost method. Prior to any adjustments for these errors and ignoring income taxes, Heller's retained earnings at January 1, 2021, would be: Multiple Choice $30.000 overstated. $150.000 overstated. 6