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: Dental
[{'content': 'During border molding, a patient asked to open the mouth wide and closed against the hand on chin, this leads to best recording of? \nSelect and explain. \nA. Masseteric notch, B. Buccal shelf area, C. Retromolar pad, D. Retromylohyoid fossae', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]