This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Pediatrics
[{'content': 'In infant, Bone Marrow biopsy is done from? \nSelect and explain. \nA. Tibia, B. Sternum, C. Posterior superior Iliac spine, D. Iliac crest', 'role': 'user'}, {'content': "Answer: A \nExplanation: a. Tibia(Ref: Nelson's 20/e p 2425, Ghai 8/e p 736)Age groupSite of bone marrow samplingYounger childrenAnterior medial tibialQ area, below tibial tuberosityAdultAnterior or posterior iliac crest area", 'role': 'assistant'}]