Assume you are working on a 12/31 year-end audit. It is now March 31 and the 12/31 accounts receivable aging shows a large receivable that was outstanding on 12/31 for 120 days. Further, the entity's receivables are typically collected in less than 45 days. You anticipate that the entity's allowance for doubtful account should be increased and inform the entity about your disposition. Management disagrees. Is there an alternative substantive procedure that you could perform that would provide convincing evidence that this balance is collectible? If so, explain.