Which of the Following Is TRUE of the Relationship Specifically

Which of the following is TRUE of the relationship specifically between human brains and group size,according to Dunbar?

A) The cognitive demands placed on the need to navigate through complex social relationships led to an increase in the size of the human brain.
B) The neocortex ratio in humans gives them the capacity to keep track of about 150 relationships.
C) The smaller the group size,the faster the brain deteriorates into goo.
D) Humans with larger brains have an affinity for larger groups.
E) Living in larger social groups tended to lead to larger neocortex ratios.