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 transoral sialolithotomy of the submandibular duct, the incision for removal of an anterior sialolith should be placed \nSelect and explain. \nA. Medial to the plica, B. Lateral to the plica, C. Directly over the duct, D. Lateral to the duct', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]