On January 1, 2018 Your Company had a $4,000 balance in the Accounts Receivable account and a $50 balance in the Allowance for Doubtful Accounts account. During 2018, Your Company provided $25,000 of service on account and $2,000 of cash sales. The company collected $24,000 cash from account receivable. The company estimated that it will be unable to collect $7,500 of its current year's sales on account. What is the net realizable value of the receivables at year end? $4,500. $4,550. $5,500. $6,500. $5,000