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
A women delivered a baby of 2.2 kg weight. Her LMP is not known. To know the maturity of baby, following are used – 
Select and explain. 
A. Sole Crease, B. Ear Cartilage, C. Breast nodule, D. All of these
D: All of these
Answer: D: All of these 
Explanation: None