3. Marlblestone encountered the following situations during the preparation of its annual financial statements. Identify whether each situation should be considered a change in estimate, a change in policy, or correction of an error. Identify also whether the change should be made retrospectively or prospectively. 4. Matusek Corporation has been experiencing a higher than expected number of warranty claims in the current year, due mainly to less than ideal product design. For this reason, the warranty expense percentage used was changed from 2% to 3% of sales. The warranty expense for the current year was calculated using the new rate of 3% of sales. The controller estimates that if the new rate had been used in the past, an additional $ 110,000 worth of warranty expense would have been recorded. Does this change require a change in accounting policy? What journal entry, if any, should Matusek record at the end of the fiscal year ending December 31, 2020?