<prompt> Disease due to deficiency of B Complex vitamins isPellagraNight blindnessOsteomalaciaSpinocerebellar ataxia  <response>: Pellagra Niacin deficiency B complexNight blindnessVitamin A deficiencyOsteomalacia Vitamin D deficiencySpinocerebellar ataxiaVitamin E deficiencyref:Harrisons 17e p442 