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: Surgery
All seen in Pancoast syndrome except- 
Select and explain. 
A. Brachial plexus involvement, B. Dyspnoea, C. Clubbing, D. Myasthenia gravis
D: Myasthenia gravis
Answer: D: Myasthenia gravis 
Explanation: None