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: Biochemistry
Deficiency of nicotinic acid results in: 
Select and explain. 
A. Beri-beri, B. Pellagra, C. Night blindness, D. Pernicious anemia
B: Pellagra
Answer: B: Pellagra 
Explanation: None