In What Way Does Therapy Differ from Simply Talking to a Friend

In what way does therapy differ from simply talking to a friend or family member about a problem?

A) Therapy takes time,while a friend's guidance is more likely to lead to a "quick fix" of the problem.
B) Friends provide empathy,while a professional therapist does not.
C) A therapist's interaction with a client is guided by theory.
D) Therapists will seek to determine the underlying issues that have created the problem.