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: Surgery
Renal tuberculosis originates in the - 
Select and explain. 
A. Renal papilla, B. Renal medulla, C. Afferent tubules, D. Efferent arteriole of glomerulus
A: Renal papilla
Answer: A: Renal papilla 
Explanation: None