This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Musculoskeletal  disorders, Subject name: Pediatrics
[{'content': 'Ponds fracture is most common in \nSelect and explain. \nA. Children, B. Adult, C. Old age, D. No relation with age', 'role': 'user'}, {'content': 'Answer: A \nExplanation: .The Ping-Pong skull fracture or a pond skullfracture refers to a depressed skull fracture of the infant skull caused by inner buckling of the calvarium.', 'role': 'assistant'}]