This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Esophagus, Subject name: Surgery
[{'content': 'The most common complication seen in hiatus hernia is: \nSelect and explain. \nA. Esophagitis, B. Aspiration pneumonitis, C. Volvulus, D. Esophageal stricture', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The most common complication seen in hiatus hernia is Esophagitis. Signs & Symptoms of hiatus hernia- Type I - Reflux Type II - Herniation of fundus leading to ischemia which can cause abdominal pain Type III - Reflux and Abdominal pain Type IV - High risk of ischemia and strangulation (Abdominal pain + increased risk of complications)', 'role': 'assistant'}]