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: Ophthalmology
Ataxia, nystagmus and ophthalmoplegia is seen in - 
Select and explain. 
A. Mysthenia gravis, B. Chronic progressive external ophthalmoplegia, C. 3
rd
 nerve palsy, D. None
B: Chronic progressive external ophthalmoplegia
Answer: B: Chronic progressive external ophthalmoplegia 
Explanation: None