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
Ptosis with orbicularis oculi palsy is seen in: 
Select and explain. 
A. Eaton Lambe syndrome, B. Myasthenia gravis, C. Polymyositis, D. Motor neuron disease
B: Myasthenia gravis
Answer: B: Myasthenia gravis 
Explanation: Ans. Myasthenia gravis