This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Hanging cast is used in \nSelect and explain. \nA. Femur, B. Radius, C. Tibia, D. Humerus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Refer Maheshwari 6th/e 94 Most of the closed fractures can be treated by hanging cast from shoulder to wrist with the elbow flexed to 90 degree Other methods of conservative Treatment areU-slab,chest arm bandage and functional castbrace', 'role': 'assistant'}]