问题详情

The sentence "Effective teamwork knows no level." means ______.
A．leaders and team members are equal in a team
B．effective teamwork is both important to leaders and team members in a team
C．effective team may be set up among top executives and lower level managers
D．the presence of teamwork will limit organization effectiveness and kill an organization请帮忙给出正确答案和分析，谢谢！