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
Commonest symptom associated with thoracic outlet syndrome is - 
Select and explain. 
A. Intermittent claudication, B. Pain on radial distribution, C. Pain in ulnar distribution, D. Gangrene
C: Pain in ulnar distribution
Answer: C: Pain in ulnar distribution 
Explanation: None