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: Dental
A woman presents with foul smelling discharge with sharply demarcated ulcers without induration on perineum and labia majora. Inguinal lymphadenopathy is also present. What is the most probable diagnosis? 
Select and explain. 
A. Gonorrhoea, B. Tuberculosis, C. Chancroid, D. Syphilis
C: Chancroid
Answer: C: Chancroid 
Explanation: Ulcer without induration (soft chancre) and inguinal lymphadenopathy is suggestive of chancroid caused by Hemophilus.ducreyi