At year end Dodgy Ltd had a balance in Accounts receivable of $40 000 and an Allowance for doubtful debts of $2000. It was decided to write off as irrecoverable the debt of Houdini Ltd totalling $3500. It was further decided that the Allowance for doubtful debts should stand at 10 per cent of Accounts receivable. What was the journal entry needed to bring the Allowance for doubtful debts to the required level after writing off the debt of Houdini Ltd?

A)	Dr Bad debts expense $5150 Cr Allowance for doubtful debts $5150

B)	Dr Bad debts expense $4000 Cr Allowance for doubtful debts $4000

C)	Dr Allowance for doubtful debts $3500 Cr Accounts receivable $3500

D)	Dr Bad debts expense $5500 Cr Allowance for doubtful debts $5500