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: Medicine
[{'content': '42 year old male presented with high grade fever with hepatosplenomegaly. At the time of admission he was very sick. On detailed evaluation doctor noticed a skin lesion on the thigh suggestive of eschar. Patient was diagnosed to have srub typhus. He is BEST treated with: \nSelect and explain. \nA. Oral Doxycycline, B. Oral Erythromycin, C. IV ceftriaxone, D. IV gentamicin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Srub typhus patients presents with high fever, eschar, regional lymphadenopathy. It is treated with: DOC: Oral doxycycline 100 BD for 7-14 days Alternatives, Azithromycin 500 for 3 days or chloramphenicol Ref: Harrison, Edition-18, Page.', 'role': 'assistant'}]