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: ENT
[{'content': 'In case of uncontrolled epistaxis, ligation of internal maxillary artery is to be done in the - \nSelect and explain. \nA. Maxillary antrum, B. Pterygopalatine fossa, C. At the neck, D. Medial wall of orbit', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]