When engaged to audit a nonissuer's internal control, an auditor should:

Group of answer choices

Obtain management's written assessment regarding whether the company has maintained effective internal control

Qualify any opinion concerning management's assessment that the cost of correcting any weaknesses exceeds the benefits

Keep informed of events subsequent to the date of the report that might have affected the accountant's opinion

Disclaim an opinion on whether the system taken as a whole is sufficient to prevent or detect material errors or irregularities