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: Anatomy
[{'content': "Kerckring's centre for ossification isassociated with: \nSelect and explain. \nA. Bones of skull, B. Ethmoid, C. Maxilla, D. Tibia", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bones of skull', 'role': 'assistant'}]