An auditor assesses a bank's inherent risk as high for its complex derivatives trading activities and its control risk as high due to a new, untested trading system. To maintain an acceptably low level of overall audit risk, what is the most appropriate action for the auditor regarding detection risk?
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A
Increase the acceptable level of detection risk by reducing substantive testing.
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B
Set the acceptable level of detection risk to a low level by performing more extensive audit procedures.
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C
Conclude that overall audit risk cannot be managed and issue a disclaimer of opinion.
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D
Rely solely on management's representations as the primary source of audit evidence.