How do I know what variables to use when preparing this schedule for Sourk Distributors? Can you help provide some direction on how to perform this?

Schedule of Accounts Receivable Sourk Distributors is a retail business. The sales, returns, and cash receipts transactions for March 20-- are reflected in the Accounts Receivable subsidiary ledger below ACCOUNTS RECEIVABLE LEDGER NAME Donachie& Co ADDRESS 1424 Jackson Creek Road, Nashville, IN 47448-2245 DATE 20-- Mar. 1 Mar. 5 Mar. 10 ITEM POST. REF DEBIT CREDIT BALANCE 17 17 17 2,052 2,008.8 2,052 43.2 2,008.8 NAM ADDRESS DATE Eck Bakery 6422 E. Bender Road, Bloomington, IN 47401-7756 ITEM POST. REF DEBIT CREDIT BALANCE 20-- Mar. 11 Mar. 16 Mar. 20 Mar. 25 1,317.6 1,317.6 22.68 1,294.92 1,294.92 2,116.8 2,116.8 NAME R. J. Kibubu, Inc ADDRESS 3315 Longview Avenue, Bloomington, IN 47401-7223 DEBIT DATE 20-- Mar. 3 Mar. 13 Mar. 18 ITEM POST. REF CREDIT BALANCE 2,408.4 2,408.4 2,408.4 2,872.8 2,872.8 NAME ADDRESs DATE Whitaker Group 2300 E. National Road, Cumberland, IN 46229-4824 ITEM POST. REF DEBIT CREDIT BALANCE 20-- Mar. 1 Mar. 27 Prepare a schedule of accounts receivable for Sourk Distributors as of March 31, 20--. Enter amounts in dollars and cents Balance 1,028 18 2,332.8 3,360.8 Sourk Distributors Schedule of Accounts Receivable March 31, 20- Total