Current Attempt in Progress Stephen and Andrea have recently been assigned to the audit of Duck Enterprises, a manufacturer of personal and commercial fishing products. The pair are deciding how best to audit the client's system of internal controls. Which of the following choices correctly represent considerations for Stephen and Andrea with respect to internal controls? O How easy it will be to obtain written assurances from senior management pertaining to internal control, to include in the audit file and as part of the audit opinion. O To what extent should internal controls be tested, and how much time will be needed to effectively audit the population of transactions. O How long it will take the auditing firm to find a specialist to audit the client's system of internal control. O Which controls should be selected for testing, and when the most appropriate time for testing those controls may be