According to paragraph three, what can we learn about the experiment?A.30% of the patients
According to paragraph three, what can we learn about the experiment?
A.30% of the patients take placebos.
B.The effect of placebo has nothing to do with the dose.
C.Patients feel still better if they are given two instead of one placebo.
D.Patients know they are taking placebos rather than real drugs.