Sylvia is the project manager for a project where requirements keep changing. Due to the requirement change, the scope baseline also needs to change and updated. In the middle of the iteration the requested changes are more. Every time she used to get approval from change control board, since the scope is baselined and approved. Change control tools should support change management activities such as?

A. Identify changes, Document changes.

B. Decide on changes.

C. Track changes.

D. All of the above.