A newborn presents with congestive heart failure, on examination has bulging anterior fontanellae 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. Vain of Galen malformation
• D. Arachnoid cyst