input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** All of the following are done to remove Confounding except   (A) Randomization   (B) Random Selection   (C) Matching   (D) Blinding
output: ['(B) Random Selection <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Randomization  (B) Random Selection  (C) Matching  (D) Blinding <> possible answers', '  All of the following are done to remove Confounding except <> context']