When a Monopolizer Is Emerging, the Leader Can Challenge the Group's

When a monopolizer is emerging, the leader can challenge the group's structure by

A) opening the floor to new speakers by announcing that the group would like to hear from someone who has not yet spoken on the issue.
B) telling the monopolizer he/she cannot answer questions until everyone else has answered at least once.
C) excusing the member from the group since he/she does not need counseling if he/she is sure of the information the group is learning.
D) All of the above.