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 8 year old male had non blanching rashes over the shin and swelling of knee joint with haematuria and protein +. Microscopic analysis of his renal biopsy specimen is most likely to show - 
Select and explain. 
A. Tubular necrosis, B. Visceral podocyte fusion, C. Mesangial deposits of IgA, D. Basement membrane thickening
C: Mesangial deposits of IgA
Answer: C: Mesangial deposits of IgA 
Explanation: None