This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
[{'content': 'Besides 3 D’s (Diarrhoea, Dermatitis & Dementi(a) of Niacin deficiency, 4th D indicates \nSelect and explain. \nA. Death, B. Destruction, C. Debilitating, D. Disability', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]