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': 'In flap method of amputation which structure is kept shoer than the level of amputation: \nSelect and explain. \nA. Bone, B. Muscles, C. Nerves, D. Skin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Bone * Bone is kept shoer than soft tissue in flap method of amputation to facilitate closure of amputation stumpQ.* In guillotine amputation, limb is transected at one level through skin, muscle & bone.', 'role': 'assistant'}]