Complete this question by entering your answers in the tabs below. a-2. What is the impact on 2020 net income? a-3. What is the impact on 2021 net income? a-4. What is the impact on net income over the two accounting periods? (Do not round intermediate calculations. Negative amounts should be entered with a minus sign.) Complete this question by entering your answers in the tabs below. a-2. What is the impact on 2020 net income? a-3. What is the impact on 2021 net income? a-4. What is the impact on net income over the two accounting periods? (Do not round intermediate calculations. Negative amounts should be entered with a minus sign.)