One of the Most Significant Shortcomings of Teams or Committees

One of the most significant shortcomings of teams or committees is:

A) Some members are often unwilling to set aside position and power for the sake of the team.
B) A team essentially cannot function unless all of its members are approximately equal in knowledge and ability.
C) Team members cannot work well together unless all are of equivalent organizational status.
D) Most team members are unlikely to cooperate if they do not receive equal credit for participation.