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
A female patient Nandini presents with upper respiratory tract infection. After 15 days, she develops hematuria. Probable diagnosis is: 
Select and explain. 
A. IgA nephropathy, B. Wegener's granulomatosis, C. Henoch scholein purpura, D. Post streptococcal glomerulonephritis
D: Post streptococcal glomerulonephritis
Answer: D: Post streptococcal glomerulonephritis 
Explanation: Answer is D (Post streptococcal glomerulonephritis): While, IgA Nephropathy presents within three days, presentation of poststreptococcal GN is usually delayed to more than 10 days'.