Bob and Carrie, two senior audit managers working for Jones CPA Firm are currently completing the audit of NexGen Enterprises, Inc., a distributor of textbooks and educational materials across the United States, Canada, and Mexico, and an ongoing audit client. In prior audits, Jones CPA. firm have noted that the client's system of internal control has been effective and strong. In addition, it has been further noted that the client operates and maintains a strong and independent internal audit function staffed by competent and experienced professionals. Based on this information, which of the following audit strategies are likely to be the most appropriate? Based on this information, Jones CPA Firm is likely to adopt a reliance on controls strategy, as prior audits have gathered and documented evidence that the client's system of internal control is strong. Part of this strategy will be to increase substantive tests of details to corroborate the auditor's opinions on internal control. Based on this information, it is likely that Jones CPA Firm will adopt a reliance on controls strategy, as based on information and evidence gathered in prior audits, the client's system of internal controls is robust and effective. Part of this strategy will be to focus more on internal controls and less on substantive testing. Jones CPA Firm is likely to adopt a reliance on controls strategy, whereby the external auditor will increase inherent risk and sample sizes related to internal controls. This strategy will ensure that nothing has changed since the last audit. It is most likely that Jones CPA Firm will focus audit time, attention, and resources on performing substantive tests of account balances, transactions, and tests of details. As the client's system of internal control is known to be strong, there is no need to focus audit attention here