This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': 'The most common symptom seen in a paraoesophageal hernia is \nSelect and explain. \nA. dysphagia, B. hea burn, C. regurgitation, D. shoness of breath', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Most common symptoms attributed to para oesophagal hernia are gastroesophageal obstructive symptoms, including dysphagia, odynophagia, and early satiety Reference: Sabiston 20th edition page: 1083', 'role': 'assistant'}]