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': "Presence of which of the following in the urine is diagnostic of glomerular injury \nSelect and explain. \nA. Bright red cells, B. 20% dysmorphic RBC's, C. 100 RBC per high power field, D. Beta 2 micro globulin", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]