P7-5 Analyzing and Interpreting the Effects of Inventory Errors Could someone please answer required 1, 2, and 3

The statements of earnings for Pruitt Company summarized for a four year period show the following (amounts in thousands of dollars): 2021 2020 2019 2018 Sales revenue $2.025 $2.450 $2.700 $2.975 Cost of sales L505 1.617 1,782 Cross prolit 520 918 X62 Operating expenses 513 538 542 30 310 380 Pretax earnings Income tax expense (305) 9 114 96 Net earnings $ 21 $ 217 $266 224 An audit revealed that in determining these amounts the ending inventory for 2019 was understated by $22 Required: 1. Revise these statements of earnings to reflect the correct amounts. 2. Did the error affect the cumulative net earnings for the four-year period? Explain. 3. What effect did the error have on the income tax expense for 2019 and 2020