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: Unknown
[{'content': 'Gilbert classification system is used for ? \nSelect and explain. \nA. Inguinal and femoral Hernias, B. Intestinal obstruction, C. Obturator hernia, D. Intestinal atresia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]