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': 'The most common cause of death in carcinoma is : \nSelect and explain. \nA. Haemorrhage, B. Uraemia, C. Infection, D. Metastasis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Uraemia', 'role': 'assistant'}]