This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nephrotic and Nephritic syndrome, Subject name: Medicine
[{'content': "A female patient presents with upper respiratory tract infection. Two days after, she develops hematuria. What is the probable diagnosis? \nSelect and explain. \nA. IgA nephropathy, B. Wegener's granulomatosis, C. Henoch-Schonlein purpura, D. Poststreptococcal glomerulonephritis", 'role': 'user'}, {'content': 'Answer: A \nExplanation: IgA nephropathy is associated with upper respiratory tract infections Gross hematuria usually appears simultaneously or within the first 48-72 hours after the infection begins; persists <3 days; loin pain- due to renal capsular swelling. Urine is usually brown rather than red, and clots are unusual.', 'role': 'assistant'}]