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
All of the following are neurologic channelopathies except : 
Select and explain. 
A. Hypokalemic periodic paralysis, B. Episodic ataxia type I, C. Familial hemiplegic migraine, D. Spinocerebellar ataxia I
D: Spinocerebellar ataxia I
Answer: D: Spinocerebellar ataxia I 
Explanation: Answer is D (Spinocerebellar Ataxia I): Spinocerebellar ataxia -- 6 is classified as neurological channelopathy hit not spinocerebellar ataxia --I