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
H. ducreyi causes 
Select and explain. 
A. Gonorrhoea, B. Herpes, C. Chancroid, D. Granuloma venereum
C: Chancroid
Answer: C: Chancroid 
Explanation: Chancroid