How Can a Group with a Large Membership Be Hampered

How can a group with a large membership be hampered by its own size from gaining power and influence?

A) Large groups tend to be viewed with less credibility by the people.
B) A larger group that is internally divided is less likely to be successful than a smaller group.
C) When a large group is dispersed across a state, there is no strong concentration of power.
D) Large groups tend to lose their strength when too many members have a say in policy.
E) Large groups require enormous amounts of money to sustain them which is not guaranteed.