Which of the Following Is NOT a Caveat of the Outcome

Which of the following is NOT a caveat of the outcome literature of brief psychodynamic treatments?

A) They offer an advantage compared to control conditions only when treatment lasts more than 20 sessions.
B) They have not been found to be more helpful than general treatment as offered in the community.
C) They are likely to fare best when therapists use a manual and receive specific training in these approaches.
D) All of the above are caveats.