input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A newborn presents with congestive heart failure, on examination has bulging anterior fontanelle with a bruit on auscultation. Transfontanellar USG shows a hypoechoic midline mass with dilated lateral ventricles. Most likely diagnosis is –   (A) Medulloblastoma   (B) Encephalocele   (C) Vein of Galen malformation   (D) Arachnoid cyst
output: ['(C) Vein of Galen malformation <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Medulloblastoma  (B) Encephalocele  (C) Vein of Galen malformation  (D) Arachnoid cyst <> possible answers', '  A newborn presents with congestive heart failure, on examination has bulging anterior fontanelle with a bruit on auscultation. Transfontanellar USG shows a hypoechoic midline mass with dilated lateral ventricles. Most likely diagnosis is – <> context']