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': 'Feature of Achalasia cardia (cardiospasm) include all of the following except- \nSelect and explain. \nA. Increasing dificulty in swallowing more for liquids than for soilds, B. Regurgitant vomiting, C. Dilated & turtuous esophagus, D. Filling defect on barium study', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]