Which of the following are components of a double blind

Which of the following are components of a double blind randomized controlled trial? You can choose more than one. Group of answer choices The individuals involved in the trial know whether they are receiving the drug or placebo Whether an individual involved in the trial receives the drug or placebo is random. All individuals who have risk factors for the disease that the drug targets receive the drug, while those who do not have risk factors receive the placebo The researchers administering the drug know which recipients are getting the drug or placebo, but the individuals do not know Both the researchers administering the drug and the individuals taking the drug do not know who is receiving the drug or placebo

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