What Is the Menninger Foundation Psychotherapy Research Project Known For

What is the Menninger Foundation Psychotherapy Research Project known for?

A) Conducting the only four longitudinal outcome studies of long-term psychoanalytic research
B) Being the first to include a no-treatment control group in psychoanalytic outcome studies
C) Comparing the effectiveness of psychoanalysis and short-term psychodynamic psychotherapy and found that patients improved in both groups
D) The significant differences between treatment groups immediately after treatment and in later follow-up