How Would You Characterize the Relationship That Existed Between Behavior

How would you characterize the relationship that existed between behavior therapists and cognitive therapists in the 1970s?

A) After initial tension between the cognitive and behavioral types, they quickly formed an alliance.
B) Many behaviorists were unhappy with the idea of considering cognition as a focus of therapy.
C) The cognitive types (introspectionists) preceded the behaviorists and resisted their unification.
D) Behaviorists welcomed cognitive therapists into their professional organizations.
E) Cognitive therapists saw themselves as different and therefore distanced themselves from behavior therapists.