The successful diagnosis of a problem results in a Known Error. On the basis of this Known Error a Request for Change may be raised. When can the Known Error be closed?

A.
When the proposal for change is lodged with ChangeManagement.

B.
When the Request for Change is authorized by the Change AdvisoryBoard.

C.
When a review of the change has led to a satisfactory result.

D.
When incidents related to the Known Error do not occur any more.