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: Pathology
Neurological symptoms and premature graying of hair is
associated with: 
Select and explain. 
A. Folic acid deficiency, B. Pernicious anaemia, C. Plummer-Vinson syndrome, D. Paterson-Kelly syndrome
B: Pernicious anaemia
Answer: B: Pernicious anaemia 
Explanation: None