Match the audit procedure to the assertion most likely being tested.\ For a sample of accounts receivable balances, an auditor sends confirmations to the client's customers\ For a sample of accounts receivable balances, an auditor looks at the credit worthiness and past payment history of the client's customers\ For a sample of sales to the client's customers recorded in late December and early January, an auditor looks at the shipping dates to ensure that sales were recorded in the correct period\ For a sample of client payments made to vendors shortly after year-end, an auditor looks at the vendor invoices to ensure the client recorded an account payable in December for services or goods received before year-end