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
The hard chancre is seen in: 
Select and explain. 
A. Syphilis, B. Chancroid, C. LGV, D. Granuloma inguinale
D: Granuloma inguinale
Answer: D: Granuloma inguinale 
Explanation: The hard chancre /hunterian chancre/primary chancre in syphilis is a single, painless, indurated ulcer. NOTE: Other chancres in syphilis: Condom chancre- at root of penis, felon chancre - extragenital chancre in finger, chancre redux- lesion similar to primary at the site of chancre during relapse, Pseudochancre redux- gumma at the site of primary. Other chancres in venereology: Soft chancre- chancroid, mixed chancre- both hard and soft occuring simultaneously in an individual. Ref: Sexually transmitted infections, Bhushan Kumar, 2nd edition, page 433-435.