The following account balances are taken from the December 31, 2020, financial statements of ABZ Advertising Company. The company uses accrual basis accounting. The following activities occurred in 2021: 1. Performed advertising services on account, $57,800. 2. Received cash payments on account, $11,000. 3. Received deposits from customers for advertising services to be performed in 2022,$2,900. 4. Made payments to suppliers on account, $5,100. 5. Incurred $47,300 of operating expenses; $41,000 was paid in cash and $6,300 was on account and unpaid as of the end of the year. What is the balance of Accounts Recelvable at December 31, 2021