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: Skin
IgA deposits on skin biopsy 
Select and explain. 
A. Henoch Schouleiln puspura, B. Giant cell aeritis, C. Microscopic polyangitis, D. Wegener's granulomatosis
A: Henoch Schouleiln puspura
Answer: A: Henoch Schouleiln puspura 
Explanation: A.i.e. Henosch Schonlein purpura