The chief audit executive $($CAE$)$ is setting up a team to perform an assurance engagement on the organization's information system security structure. The organization has offices all over the world that rely on the system. The audit team will assess risks, monitor implementation of corrective action, and evaluate controls. Which question does not require an answer when selecting the team to conduct this audit engagement?

A$.$ What types of skills are needed on the engagement?

B$.$ Which auditors have the skills and experience to work on this audit?

C$.$ Are specialty skills from outside the internal audit department required?

D$.$ How many hours are needed to complete the engagement?