What does research show regarding race and ethnic differences in those who receive mental health services? a. ethnic minorities tend to utilize mental health services less frequently than white, middle-class americans. b. ethnic minorities tend to utilize mental health services more frequently than white, middle-class americans. c. ethnic minorities tend to utilize mental health services to the same extent as white, middle-class americans. d. ethnically asian minorities tend to utilize mental health services less frequently than ethnically black minorities.