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': 'Stability of denture can be increased by \nSelect and explain. \nA. V-Y plasty procedure, B. Z plasty procedure, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: V-Y plasty procedure or Z plasty procedure is used for frenectomy procedure to increase the stability of denture.', 'role': 'assistant'}]