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: ENT
[{'content': 'Odynophagia is - \nSelect and explain. \nA. Pain during swallowing, B. Difficulty in swallowing, C. Bad odour from mouth, D. Psychiatric disease', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Dysphagia : - Difficulty in swallowing.\nOdynophagia : - Swallowing causes pain.', 'role': 'assistant'}]