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
Chanroid is caused by- 
Select and explain. 
A. Hemophilus ducrey's, B. Hemojphilus vaginalis, C. Trachoma virus, D. Treponima pallidum
A: Hemophilus ducrey's
Answer: A: Hemophilus ducrey's 
Explanation: A i.e. Hemophilus ducreyi