The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Umblical cord contains:   (A) 3 arteries & 1 vein   (B) 1 artery& 3 veins   (C) 1 artery & 1 vein   (D) 2 arteries & 1 vein
['(D) 2 arteries & 1 vein <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 3 arteries & 1 vein \n (B) 1 artery& 3 veins \n (C) 1 artery & 1 vein \n (D) 2 arteries & 1 vein <> possible answers', '  Umblical cord contains: <> context@']