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
[{'content': 'Ulcer on the penis which bleeds on touch is feature that best in which of the following – \nSelect and explain. \nA. Donovanosis, B. Syphilis, C. Herpes genitalis, D. LGV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ulcers which bleed easily are Donovanosis and Chancroid.', 'role': 'assistant'}]