AT&U Company Data for the year ended December 31 are presented below: Sales (credit) $2,500,000 Sales returns and allowances 50,000 Accounts Receivable (December 31) 640,000 Allowance for Doubtful Accounts (Before adjustment at December 31) 20,000 Estimated amount of uncollected accounts based on aging analysis 45,000 Refer to AT&u Company. If the company uses the aging of accounts receivable approach to estimate its bad debts, what amount will be reported as bad debt expense? a $45,000 b. $20,000 c. $25,000 d. $49,000