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': 'Structure damaged most commonly during Surgery on Ranula is? \nSelect and explain. \nA. Lingual Aery, B. Lingual Nerve, C. Submandibular duct, D. Sublingual duct', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Submandibular duct REF: Clinical surgery: Volume 9 Head and neck edited by Charles Rob, Rodney, Smith page 56 "The treatment of ranula constitutes a problem, owing to the technical difficulty of complete excision without damage to adjacent structures such as the submandibular duct"', 'role': 'assistant'}]