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: Pathology
"Tophus" is the pathognomic lesion of which of the following condition - 
Select and explain. 
A. Multiple myeloma, B. Cystinosis, C. Gout, D. Bale's disease
C: Gout
Answer: C: Gout 
Explanation: . Gout