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
[{'content': 'Which is not true regarding thoracic inlet syndrome - \nSelect and explain. \nA. Most commonly radial nerve, B. Resection of 1st rib is effective t/t, C. Physiotherapy and position exercises relieves symptom, D. Neurological signs and symptoms are common.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]