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
Gumma occurs in: 
Select and explain. 
A. Primary stage of Syphilis, B. Secondary stage of Syphilis, C. Tertiary stage of Syphilis, D. Primary tuberculosis
C: Tertiary stage of Syphilis
Answer: C: Tertiary stage of Syphilis 
Explanation: None