URGENTLY NEEDED TO BE ANSWERED!!!!

Which of the following transactions does NOT affect bad debt expense? (3 marks) a. giving a cash refund to a customer who returned an item that he had already paid for b. using the aging method to estimate the required Allowance for Doubtful Accounts c. receiving a cheque from a customer whose account receivable was previously written off d. writing off an account receivable e. a sales return, where the original sale was on account f. only choices a, b, and c are correct g. only choices a,b, and d are correct h. only choices b, c, and d are correct i. only choices c, d, and e are correct j. only choices b, d, and e are correct Enter the letter corresponding to your choice. (A B C D E FGH J )