When considering auditors responsibilities for the clients internal control system, much depends on whether the audit team believes it can rely on the clients internal control system in order to modify substantive testing on the financial statement audit. If the audit team is able to rely on the internal control system, which impact on substantive testing would you expect to see:

an increase in sample size from 60 to 90 selections.

the use of a more effective substantive testing procedure.

the timing of the substantive testing might occur at the interim testing date.

no impact on substantive testing would be expected.