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': "3-D's are associated with: March 2013 (a, b, e, f) \nSelect and explain. \nA. Rickets, B. Scurvy, C. Beri-Beri, D. Pellagra", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D i.e. Pellagra Persons suffering from pellagra usually appear to be poorly nourished, and they are often weak and underweight. They also exhibit dermatitis, diarrhea, and dementia. If untreated, pellagra can result in death.', 'role': 'assistant'}]