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': 'Pellagra in Jowar eating population is due to \nSelect and explain. \nA. Niacin in bound form, B. Deficiency of Tryptophan, C. Excess of Leucine, D. High consumption of milk and milk products', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]