input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Bias that arises from evaluating data on patients and hospital records only such that probability of exposure to a particular factor is increased is known as:   (A) Berkesonian bias   (B) Confound bias   (C) Memory or recall bias   (D) Selection bias
output: ['(A) Berkesonian bias <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Berkesonian bias  (B) Confound bias  (C) Memory or recall bias  (D) Selection bias <> possible answers', '  Bias that arises from evaluating data on patients and hospital records only such that probability of exposure to a particular factor is increased is known as: <> context']