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': 'Chandler index is used for - \nSelect and explain. \nA. Anchylostoma duodenale, B. Ascariasis, C. Guinea worm infestations, D. Filariasis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: <p> Chandlers index is used for hook worm infestation. Reference:Park&;s textbook of preventive and social medicine,K.Park,21st edition,page no:221 & 22nd edition, pg no:221. <\\p>', 'role': 'assistant'}]