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
Sign of Groove is found in - 
Select and explain. 
A. Chancroid, B. Granuloma inguinale, C. LGV, D. Syphilis
C: LGV
Answer: C: LGV 
Explanation: C i.e. LGV