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
[{'content': 'Which of the following is not seen in hereditary spherocytosis - \nSelect and explain. \nA. Direct Coombs test + ve, B. Increased osmotic fragility, C. Leg ulcers, D. Splenomegaly', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]