Company procedures require the creation of a lessons learned document. Which of the following is the BEST use of lessons learned

A) Historical records for future projects.
B) Planning record for the current project.
C) Informing the team about what the project manager has done.
D) Informing the team about the project management plan.

下表各选项中，不能利用Y通过置换反应得到W的一组化合物是