A senior project manager is doing knowledge-sharing with a newly appointed junior project manager on Scope Control and Scope Changes related to change request management. He recommends always updating the lessons learned register while doing the scope control from the beginning.

What is the reason behind the senior manager's suggestion?

A. Lessons learned earlier in the project can be applied in later phases to improve the scope control.

B. Lessons learned define how product scope will be controlled. C. Lessons learned give performance information over some time. D. Lessons learned give comparison information of Plan vs. Actual.