In double-blind study, _____.
A) neither the subjects nor the scientists know which subjects are receiving the active treatment and which are receiving the placebo
B) the scientists know which subjects are receiving the placebo but the subjects do not
C) both the subjects and the scientists know which subjects are receiving the active treatment and which are receiving the placebo
D) both the subjects and the scientists know which subjects are receiving the placebo
E) only the subjects know the types of treatment they are receiving
Correct Answer:
Verified
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