A project manager has identified a minor skills gap in the operational team that will end up supporting the project solution.
Which of the following is the BEST risk mitigation strategy that the project manager should use?

A. Organize adequate training and have one of the operational staff as part of the project team.
B. Raise a risk in the risk register, identify the likelihood and the consequence of the risk occurring.
C. Have the project adequately document the solution and ensure a transition is in place.
D. Escalate this as an issue to the project control board and ensure that there is adequate discussion.