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
A 30-year-old male present with urethritis. All of the following can be causative agent except: 
Select and explain. 
A. N. gonorrhoeae, B. Chalmydia trachomatis, C. Trichomonas vaginalis, D. Hemophilus ducreyi
D: Hemophilus ducreyi
Answer: D: Hemophilus ducreyi 
Explanation: Ans. (d) Hemophilus ducreyi Causes of urethritis are: Neisseria gonorrhoea (MC) Chlamydia trachomatis Ureoplasma urealyticun Mycoplasma hominis Herpes virus Cytomegalovirus Gardenella vaginalis Acinetobacter woffi, Ac calcoaceticus Candida albicans Trichomonas vaginalis