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': 'In coagulation failure serum level of fibrinogen is less than : \nSelect and explain. \nA. 150 mg, B. 100 mg, C. 200 mg, D. 250 mg', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 100 mg', 'role': 'assistant'}]