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: Surgery
[{'content': 'A lady presents with swelling of hands with shiny skin. She has a history of fracture radius and kept on POP cast for 4 weeks after which she develops this. Give the most likely diagnosis \nSelect and explain. \nA. Myositis ossification, B. Rupture of external pollicis longus tendon, C. Reflex sympathetic dystrophy, D. Malunion', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Reflex sympathetic dystrophy', 'role': 'assistant'}]