This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and health, Subject name: Social & Preventive Medicine
[{'content': 'Chandler index is an impoant tool in epidemiology. Which of the following is its least likely use? \nSelect and explain. \nA. Determining case severity and prognosis, B. Impact of control programme, C. Endemicity, D. Load of infection in the community', 'role': 'user'}, {'content': "Answer: A \nExplanation: Chandlers index is useful in determining case severity and prognosis and is used in epidemological study. Worm load can be compared. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 21ST EDITION. PAGE NO - 221", 'role': 'assistant'}]