Malcolm Gladwell, in the Tipping Point, Said That Groups Should

Malcolm Gladwell, in The Tipping Point, said that groups should be capped at 150 people because

A) that is the maximum number of people with whom a leader can communicate effectively.
B) people begin to form subgroups once this number is reached.
C) interpersonal relationships become strained when individuals feel they have to stay in touch with too many people.
D) effective social relationships reach a peak at this number.
E) in groups larger than this number, leaders loose power as more individuals seek to control group behaviour.