This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
[{'content': 'Cardiac end of stomach lies at which rib \nSelect and explain. \nA. 8th rib, B. 7th rib, C. 9th rib, D. 10th rib', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Nearer its pyloric than its cardiac end is a well-marked notch, the incisura angularis, which varies somewhat in position with the state of distension of the viscus; it serves to separate the stomach into a right and a left poion. ref - BDC 6e vol2 pg250', 'role': 'assistant'}]