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': 'Split skin graft can be applied over - \nSelect and explain. \nA. Muscle, B. Bone, C. Cailage, D. Eyelid', 'role': 'user'}, {'content': "Answer: A \nExplanation: Answer is 'a' i.e. Muscle: A rich vascular supply is essential for suppo of a split - thickness (or full thickness) graft. It does not survive when placed directly over bone, cailage or bare tendon. For critical & small areas such as an eyelid, a full thickness graft is selected, so that contraction of the grafted material is mimimal.", 'role': 'assistant'}]