This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
A child presents with massive hemetemesis and systemic hypotension (He has no fever or other significant history) Examination reveal massive splenomegaly but no hepatomegaly) Likely diagnosis is - 
Select and explain. 
A. Hepatocellular carcinoma, B. Bleeding duodenal ulcer, C. Extrahepatic portal venous obstruction, D. Non-cirrhotic portal fibrosis
C: Extrahepatic portal venous obstruction
Answer: C: Extrahepatic portal venous obstruction 
Explanation: None