This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Not true about Kala-Azar is - \nSelect and explain. \nA. Sandfly is the vector, B. Man is the only reservoir in India, C. Aldehyde test is diagnostic, D. Man has flagellar stage of organism', 'role': 'user'}, {'content': 'Answer: D \nExplanation: <p> The life cycle is completed in two different hosts- a veibrate and an insect. Man has the amastigote form and insect has a flagellated promastigote. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:305. <\\p>', 'role': 'assistant'}]