The following information pertains to Lightning, Inc. at the end of December:

Lightning uses the aging method and estimates it will not collect 2% of accounts receivable not yet due, 10% of receivables less than 30 days past due, and 40% of receivables greater than 30 days past due. The accounts receivable balance of $7,000 consists of $3,500 not yet due, $2,000 less than 30 days past due, and $1,500 greater than 30 days past due. What is the appropriate amount of Bad Debt Expense? a. $400. b. $470. c. $870. d. $1,270.