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
[{'content': 'Chancroid may be caused by: \nSelect and explain. \nA. T. pallidium, B. G. donovani, C. Chlamydia Trachomatis, D. Herpes Hominis Virus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Herpes virus - hominis', 'role': 'assistant'}]