Which statement about the cultural influences on the choice of psychotherapy is true?

Which statement about the cultural influences on the choice of psychotherapy is true?
 
  a. Researchers have found that matching therapeutic techniques with a client's culturally determined expectations has limited benefits.
  b. Research has shown that when a client's and therapist's goals are mismatched, more success is seen when the therapist's goals prevail.
  c. Cultural background has limited impact on therapeutic efficacy.
  d. Cultural-sensitivity training helps a therapist to set goals that are in harmony with the client's cultural views.