The following are multiple choice questions (with answers) about medical knowledge.   **Question:** During exercise in physiological limits what is the effect on end systolic volume?   (A) ESV decreases   (B) ESV increase   (C) ESV remain unchanged   (D) ESV first decrease and then increases
['(A) ESV decreases <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) ESV decreases \n (B) ESV increase \n (C) ESV remain unchanged \n (D) ESV first decrease and then increases <> possible answers', '  During exercise in physiological limits what is the effect on end systolic volume? <> context@']