Which of the following statements are true regarding Bidder Conferences, and Develop Qualified Sellers List?

A. They are tool/techniques used to obtain responses, such as bids and proposals from prospective sellers

B. They are part of Project Planning process group

C. They are tool/techniques used to process bid/ proposals in order to select one or more qualified sellers

D. They are tools/ techniques used to identify which project requirement can be satisfied using external sellers/ vendors

E. They are the part of Project Monitoring and Controlling process group