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': 'What is the shape of cavity of body of uterus in coronal section ? \nSelect and explain. \nA. cylindrical, B. triangular, C. oval, D. spindle', 'role': 'user'}, {'content': "Answer: B \nExplanation: In sagittal section, the cavity of the body of the uterus is seen as a mere slit because the uterus is compressed anteroposteriorly. In coronal section, the cavity is seen to be triangular in shape, the apex being directed downwards. Ref : B D Chaurasia's Human Anatomy, Seventh Edion, volume 2 , pg. no., 421.", 'role': 'assistant'}]