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
Which of the following does not belong to 3Ds of Pellagra 
Select and explain. 
A. Diarrhea, B. Dementia, C. Dermatitis, D. Diplopia
D: Diplopia
Answer: D: Diplopia 
Explanation: Options a, b, c are part of 3Ds of pellagra.