This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hernia, Subject name: Surgery
[{'content': 'Most common type of Hiatal hernia is \nSelect and explain. \nA. Sliding, B. Rolling, C. Mixed, D. None of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Sliding * Hiatal hernia is characterized by separation of the diaphragmatic crura and protrusion of the stomach into the thorax through the resulting gap.* There are 4 types of hiatal herniaType I: Sliding hernia (most common type ~ 70 - 80%)Type II: Paraesophageal or rolling herniaType III: MixedType IV: Tese hernias are distinguished by the presence of other abdominal viscera wihin the defect i.e. omentum, transverse colon.", 'role': 'assistant'}]