This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hemolytic anemia, Subject name: Pediatrics
[{'content': 'A child died soon after bih. On examination there was hepatosplenomegaly and edema all over body. Most probable diagnosis in: \nSelect and explain. \nA. a-thalassemia, B. b-thalassemia, C. Hereditary spherocytosis, D. ABO incompatibility', 'role': 'user'}, {'content': "Answer: A \nExplanation: - This case history suggests NON IMMUNE HYDROPS - seen in severe variety of alpha thalassemia (HbH or Hb Bas). - ABO incompatibility usually leads to mild hemolysis, which is not severe enough to lead to hydrops fetalis. - b-thalassemia - Doesn't present immediately after bih", 'role': 'assistant'}]