When determining if appropriate resources exist to achieve engagement objectives, which of the following factors should a chief audit executive consider?
1. Nature and complexity of the audit engagement.
2. Time constraints.
3. Effectiveness of the audit committee.
4. Availability of resources for the engagement.
A. 1 and 2 only
B. 1, 2, and 3 only
C. 1, 2, and 4 only
D. 1, 3, and 4 only