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: Medicine
Neurogenic cause of dysphagia includes following except: 
Select and explain. 
A. Multiple sclerosis, B. Tetanus, C. Parkinsons's disease, D. Tetany
D: Tetany
Answer: D: Tetany 
Explanation: None