Why Did Robert Rosenthal Use Deception in His Experiment to Test

Why did Robert Rosenthal use deception in his experiment to test the self-fulfilling prophecy?

A) He did not want students to know that they were not expected to excel in school.
B) If teachers knew how he chose students, the teacher's behavior may have changed.
C) Parents of the labeled students may have called the experiment unethical.
D) When people know they are part of an academic study, they expect payment.