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': 'Anterior surface of stomach is in contact with the following ribs: \nSelect and explain. \nA. 4th to 7th, B. 6th to 9th, C. 7th to 10th, D. None of the above', 'role': 'user'}, {'content': "Answer: B \nExplanation: The lateral pa of the anterior surface is posterior to the left costal margin and in contact with the diaphragm, which separates it from the left pleura, the base of the left lung, the pericardium and the left sixth to ninth ribs. Ref: Gray's anatomy 40th edition, Chapter 71.", 'role': 'assistant'}]