A change request has just been formally documented and approved by the Change Control Board. The project manager now needs to communicate this to a project team member. Which of the following activities must the project manager necessarily do$?$

Question $12$ options:

Plan for a meeting over lunch and detail the changes.

Telephone the team member and inform him$/$her about the changes.

Write an informal memo communicating the changes

Issue a formal communication document informing the team member about the changes.