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': 'Human development index doesn&;t include \nSelect and explain. \nA. Mean years of schooling, B. Health, C. Education, D. Living standards', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Human Development Index : It is a statistical composite index of These are used to rank countries into four tiers of human development', 'role': 'assistant'}]