This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology, Subject name: Microbiology
[{'content': 'Vector for transmission of Kala-azar is \nSelect and explain. \nA. Sandfly, B. Reduvid bug, C. Tsetse fly, D. Louse', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a (Sandfly). (Ref. Textbook PSM by Park, 17th ed., 234)VectorDisease transmittedSandflykala-azar (leishmaniasis) and oriental soreReduvid bugChagas diseaseTsetse flysleeping sicknessLouseepidemic typhus', 'role': 'assistant'}]