Susan Is Interested in Whether or Not College Students Are

Susan is interested in whether or not college students are prejudiced against elderly people. She has students come into the lab, view the faces of elderly people, and make judgments about the emotion displayed by each face. Susan tells participants that they are working on an emotion recognition experiment; however she is actually measuring
The number of negative emotions assigned to the elderly faces. Susan's proposed research involves which of the following violations of the ethical standards in human research?

A) discrimination against the elderly
B) use of psychological risk
C) use of deception
D) lack of privacy