Documentation of a business case used in an IT development project should be retained until:

A.
the end of the system’s life cycle.

B.
the project is approved.

C.
user acceptance of the system.

D.
the system is in production.

Explanation:
A business case can and should be used throughout the life cycle of the product. It serves as an anchor for new
(management) personnel, helps to maintain focus and provides valuable information on estimates vs. actuals.
Questions like, ‘why do we do that,”what was the original intent’ and ‘how did we perform against the plan’ can
be answered, and lessons for developing future business cases can be learned. During the development phase
of a project one should always validate the business case, as it is a good management instrument. After
finishing a project and entering production, the business case and all the completed research are valuable
sources of information that should be kept for further reference