A post hoc test is conducted to make multiple comparisons between the mean scores of three groups of clients in a child guidance center. Group A receives play therapy, only. Group both play and family therapy. The significance level is .05. The p value for the difference between Groups A and B is .66. The p value for the difference between Groups A and C is .01. The p value for the difference between Groups B and C is .01. receives family therapy, only. Group C receives Comparison Play Therapy (Group A) X Family Therapy (Group, = 0.66 B) Play Therapy (Group A) X Play Therapy + Family Therapy (Group C) Family Theraphy (Group B) X Play Therapy + Family Therapy (Group C) p-value SE p = 0.01 p = 0.01 AVOMA Which of the following interpretations is most appropriate in light of these results? a. Play therapy and family therapy appear to be equally effective. ed a b. Play therapy appears to be effective. c. Family therapy appears to be effective. d. The combination of play and family therapy appears to have a significantly different effect than either play therapy alone or family therapy alone.