The American Psychological Association Dawn Is Studying Attitudes About Using

The American Psychological Association Dawn is studying attitudes about using "morning after" contraceptives.She is
Afraid that if she reveals her experimental hypothesis, she will distort subject
Responses.If she withholds information about this study, she must be sure
That

A) she extensively debriefs subjects at the end of the experiment.
B) she obtains informed consent from the subjects.
C) subjects can withdraw from the experiment at any time.
D) the information withheld will not affect the subjects' decision to participate.