One Major Problem in the Outcome Research Related to School

One major problem in the outcome research related to school counseling is:

A) that there is not the same supply of researched instruments to use in evaluating school counseling programs as there is for mental health or career counseling.
B) that there are too many schools on which to collect quality data.
C) that school counselors are not trained in methods of conducting outcome research
D) that most people (teachers, parents, administrators, government officials) are not interested in outcome research results for school counseling programs.