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': 'A completed denture patient complains that he has pain in his throat during swallowing. This indicates: \nSelect and explain. \nA. Over extended PPS, B. Over extended lingual flange, C. Over extended Lingual flange in retromylohyoid region, D. His tonsils are inflammed', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]