When control risk for the existence assertion is assessed at a high level, which of the following is a likely effect with respect to the auditors' confirmation of receivables?

• The account balances as of year-end will generally be confirmed.
• The auditors will in general use blank rather than positive confirmation requests.
• The auditors will be required to confirm accounts as of an interim date (during the year under audit) and as of year-end.
• Confirmation will not in general be used as the auditor will rely primarily upon support such as vendors' invoices, purchase orders and receiving reports.