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: Medicine
[{'content': 'In active lupus nephritis which one of the following prostaglandin excretion is increased in the urine \nSelect and explain. \nA. Prostaglandin E, B. Prostagladin L, C. Prostaglndin A, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]