Which of the Following Statements About the Stages of Group

Which of the following statements about the stages of group development is ?

A) Forming is the stage when members are getting to know each other.
B) Groups go through a storming or conflict stage after they have completed most of their work.
C) Groups need to establish norms before they can become fully productive.
D) Groups are more productive in their later stages of development.
E) Not all groups follow the typical pattern of stages of group development.