This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genital Tract Infections (Too hot to handle!), Subject name: Gynaecology & Obstetrics
[{'content': 'At the time of Annual examination, a patient expresses concern over exposure to sexually transmitted diseases. During your pelvic examination, a singular, indurated, Nontender ulcer is noted on the vulva. VDRL and FTA tests are positive. Without treatment, the next stage of this disease is clinically characterized by: \nSelect and explain. \nA. Optic nerve atrophy and generalized paresis, B. Tabes dorsalis, C. Gummas, D. Macular rash over the hands and feet', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Diagnosis is Primary Syphilis and Next stage is Secondary syphilis Syphilis Etiology - Spirochete Treponema pallidum. Diagnosis is by dark-field microscopy Primary syphilis: A hard chancre ,painless ulcer with an indurated base on the vulva, vagina, or cervix. Secondary syphilis is due to hematogenous dissemination of the spirochetes. C/f- Red macules and papules over the palms of the hands and the soles of the feet. Teiary syphilis include optic atrophy, tabes dorsalis, generalized paresis, aoic aneurysm, and gummas of the skin and bones.', 'role': 'assistant'}]