Hi I need help with this question

When an auditor is asked to express an opinion on an entity's rent and royalty revenues, he or she may:

1) not accept the engagement unless also engaged to audit the full financial statements of the entity.

2) accept the engagement, provided distribution of the auditor's report is limited to the entity's management.

3) accept the engagement, provided the auditor's opinion is expressed in a special report.

4)not accept the engagement because to do so would be tantamount to agreeing to issue a piecemeal opinion