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: Microbiology
[{'content': 'Promastigote form of Leishmania is found in which pa of sandfly: March 2005 \nSelect and explain. \nA. Lymph node, B. GIT, C. Spleen, D. Bone marrow', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: GIT', 'role': 'assistant'}]