input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Best index to measure cardiac afterload is:   (A) Mean aerial pressure   (B) LV end diastolic pressure   (C) LV mean systolic pressure   (D) Total peripheral resistance
output: ['(D) Total peripheral resistance <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Mean aerial pressure  (B) LV end diastolic pressure  (C) LV mean systolic pressure  (D) Total peripheral resistance <> possible answers', '  Best index to measure cardiac afterload is: <> context']