The 2010 Entering Freshman Class at the University of California,Berkeley,was

The 2010 entering freshman class at the University of California,Berkeley,was invited to give a saliva sample to test for genetic markers.Eventually,the university was forced to shut down the study due to ethical concerns.What might have been a main ethical concern of this study?

A) the use of genetic profiles
B) student confidentiality
C) the lack of human subjects' clearance
D) an inability to ensure anonymity