This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neonatal hypothermia, Subject name: Pediatrics
[{'content': 'What is this device used to prevent hypothermia in a preterm neonate? \nSelect and explain. \nA. Radiant warmer, B. Incubator, C. Room Heater, D. Phototherapy unit', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The given picture shows an incubator:has inbuilt feedback system that controls temperature inside incubator. Radiant warmer: open system. Baby lies on crib', 'role': 'assistant'}]