Manley operates a law practice on the accrual method and calander year. At the beginning of the year , Manely's firm had an allowance for doubtful accounts with a balance of $15,000. At the end of the year, Manley recorded bad debt expense of $23,000 on his income staement and the balance of the allowance for doudtful accounts had increased to $18,000. What is Manley's deduction for bad debit expense this year?

A)$23,00

B)$3,000

C)$26,000

D)$5,000

E)$20,000