This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
Disease due to deficiency of B Complex vitamins is 
Select and explain. 
A. Pellagra, B. Night blindness, C. Osteomalacia, D. Spinocerebellar ataxia
A: Pellagra
Answer: A: Pellagra 
Explanation: Pellagra Niacin deficiency (B complex)Night blindnessVitamin A deficiencyOsteomalacia Vitamin D deficiencySpinocerebellar ataxiaVitamin E deficiency(ref:Harrison's 17/e p442)