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: Orthopaedics
[{'content': 'A 4 year old child with history of fall on left forearm and develops fracture in dorsal surface of mid region of radius. Best treatment is \nSelect and explain. \nA. Immobilize with POP, B. Open reduction internal fixation, C. K-wire fixation, D. Break the cortex on the other side and immobilize by POP', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Is a case of green stick fracture.', 'role': 'assistant'}]