This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: S.T.D., Subject name: Skin
A man having multiple, painful, indurated, undermined, sloughed ulcer over glans penis, which occurred 5 days after exposure, most likely diagnosis is: 
Select and explain. 
A. Chancroid, B. Primary chancre, C. Herpes genitalis, D. LGV
A: Chancroid
Answer: A: Chancroid 
Explanation: Ans. a. ChancroidChancre and LGV are painless ulcers. Ulcers of HSV usually have a history of vesicles prior to rupture. Ulcers of chancroid are dirty looking with slough formation and undermined edges.