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: Gynaecology & Obstetrics
[{'content': 'Which of the following is not used in post paum haemorrhage? \nSelect and explain. \nA. PGF, B. PGE, C. PGE, D. Ergometrine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: PGE', 'role': 'assistant'}]