This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
[{'content': '"Genital elephantiasis" is caused by \nSelect and explain. \nA. Lymphogranuloma venereum, B. Chancroid, C. Syphilis, D. Rickettsia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (Lymphogranuloma venereum) (428-A7th)LYMPHOGRANULOMA - VENEREUM (Lymphogranuloma inguinale, poradenitis, climatic or tropical bubo)- Caused by chlamydia -trachomatis - L2 (Most commonly)- Preferred site - regional lymphnodes- Primary lesions - painless papulovesicular lesion ** on the external genitalia- Women - hemorrhagic proctitis with regional lymphadenitis- Late sequelae in women leading to rectal strictures and elephantiasis of the vulva (esthiomene)**Chancroid or soft sore is caused by Haemophilus - ducryi "School of fish" or rail rod track" appearance- Tender nonindurated irregular ulcers on the genitalia', 'role': 'assistant'}]