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: Pediatrics
[{'content': 'A women delivered a baby of 2.2 kg weight. Her LMP is not known. To know the maturity of baby, following are used – \nSelect and explain. \nA. Sole Crease, B. Ear Cartilage, C. Breast nodule, D. All of these', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]