A CIO determines IT investment management processes are not fully realizing the benefits identified in business cases. Which of the following would be the BEST way to prevent this issue? 

Answer options:

A. Document lessons learned throughout the investment life cycle.
B. Perform stage-gate reviews throughout the life cycle of each project.
C. Evaluate the delegation of investment approval authorities.
D. Establish a requirement for CIO review and approval of each business case.

A