988 The following information is available for Murphy Company: Allowance for doubtful accounts at December 31, 2011 $ 16,000 Credit sales during 2012 800,000 Accounts receivable deemed worthless and written off during 2012 18,000 As a result of a review and aging of accounts receivable in early January 2013, however, it has been determined that an allowance for doubtful accounts of $11,000 is needed at December 31, 2012. What amount should Murphy record as "bad debt expense" for the year ended December 31, 2012? a. $9,000 b. $11,000 c. $13,000 d. $27,000