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: Anatomy
[{'content': 'Esophageal opening in the diaphragm is at the level of \nSelect and explain. \nA. T8, B. T10, C. T12, D. T6', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Oesophagus pierces diaphragm at the level of tenth thoracic vertebrae.', 'role': 'assistant'}]