This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
[{'content': 'In Chandler Index denominator used is \nSelect and explain. \nA. Per gram of stools, B. Per 100 gram of stools, C. Average number of eggs, D. Average number of adult worms', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Chandler Index is the average number of hookworm eggs per gram of faeces for the entire community. Ref : Park 23rd edition Pgno : 243', 'role': 'assistant'}]