During the initiation phase, the project manager invites a financial, a law consultant, a purchase agent and an electrical engineer to create a list of project risks. During the meeting, the experts write down the risks on notes and attach the notes to the wall so the project manager can collect and analyze the risks. Which of the following techniques did the project manager use ?
A、Interviewing
B、Brainstorming
C、Risk analysis
D、Delphi technique