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: Microbiology
Buschke-Ollendroff sign is seen in 
Select and explain. 
A. Primary syphilis, B. Congenital syphilis, C. Secondary syphilis, D. Tertiary syphilis
C: Secondary syphilis
Answer: C: Secondary syphilis 
Explanation: Buschke-Ollendroff sign -  deep dermal tenderness on pressing the lesion with a pinhead. Seen in secondary syphilis.