<prompt> A patient is found to have sun-sensitive dermatitis, diarrhea, and dementia he must be suffering from the deficiency of which of the following.NiacinRiboflavinFolic acidIron  <response>: The most common symptoms of niacin deficiency involve the skin, the digestive system, and the nervous system. The symptoms of pellagra are commonly referred to as the three Ds: sun-sensitive dermatitis, diarrhea, and dementia. A fourth D, death, occurs if pellagra is left untreated 