Part 1: On July 1, 2020, Wallace Company, a calendar-year company, sold special-order merchandise on credit and received in return an interest-bearing note receivable from the customer. Wallace Company will receive interest at the prevailing rate for a note of this type. Both the principal and interest are due in one lump sum on June 30, 2021. Part 2: On December 31, 2020, Wallace Company had significant amounts of accounts receivable as a result of credit sales to its customers. Wallace uses the allowance method based on credit sales to estimate bad debts. Past experience indicates a reliable estimate of uncollectible accounts can be developed based on an aging analysis of receivable balances. This pattern is expected to continue. Questions: a. When should Wallace Company report interest revenue from the note receivable? Discuss the rationale for your answer. b. Discuss the rationale for using the allowance method based on the balance in the trade receivables accounts. c. How should Wallace Company report the allowance for doubtful accounts on its balance sheet on December 31, 2020? Also, describe the alternatives, if any, for the presentation of bad debt expense in Wallace Company's 2020 income statement