On December 15, the accounts receivable balance was $50,000 and the balance in the allowance for doubtful account Oa. $44,000 Ob. $49,000 Oc. $45,000 Od. $46,000 wance for doubtful accounts was $5,000. That morning, a $1,000 uncollected account was written off. The net realizable value of accounts receivable immediately after the write-off is