The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Physiological active form of cholesterol is:   (A) Lipoprotein   (B) Lipid   (C) Free cholesterol   (D) None of the above
['(C) Free cholesterol <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Lipoprotein \n (B) Lipid \n (C) Free cholesterol \n (D) None of the above <> possible answers', '  Physiological active form of cholesterol is: <> context@']