This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pediatrics
[{'content': 'Infantile polycythemia is seen in \nSelect and explain. \nA. Cerebellar hemangioma, B. Retinoblastoma, C. Hepatoblastoma, D. Nesidioblastosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Other clinical features include lethargy, tachypnea, cyanosis, jitteriness, poor feeding, feeding intolerance, hypoglycemia. Most common presentation: The majority of newborn infants withpolycythemia are asymptomatic. They can only be identified by performance of a hematocrit. Reference: GHAI Essential pediatrics, 8th edition', 'role': 'assistant'}]