Question 23 of 33 You have reports from four different studies of a particular drug. Each report
recommends a different plan for the drug's use, but the studies were done
differently. Which study would have produced the most trustworthy results?
A. One in which both the researcher and the patients knew who got
the drug and who got the placebo.
B. One in which neither the researcher nor the patients knew who got
the drug and who got the placebo
c. One in which the researcher knew who got the drug and who got
the placebo, but the patients did not know
D. One in which the researcher did not know who got the drug and
who got the placebo but the patients did know.