Choose the assertion that is best addressed by the following statement: "Accounts payable," listed on the masterfile, are for valid purchases that have not yet been paid for. Class of Transaction - Presentation Account Balance - Completeness Class of Transaction - Cut-off Account Balance - Accuracy, Valuation, Allocation Account Balance - Existence Class of Transaction - Classification Account Balance - Occurrence Class of Transaction - Occurrence Account Balance - Classicanon O Class of Transaction - Accuracy O Account Balance - Presentation Account Balance - Rights and Obligations