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
In flap method of amputation which structure is kept shoer than the level of amputation: 
Select and explain. 
A. Bone, B. Muscles, C. Nerves, D. Skin
A: Bone
Answer: A: Bone 
Explanation: 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.