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: Medicine
All are true of pancoast's tumor except -  a) Deltoid muscle atrophy  b) Treated with radiotherapy & chemotherapy  c) Horner's syndrome  d) Pain along the ulnar border of the forearm 
Select and explain. 
A. ab, B. bc, C. abc, D. cd
A: ab
Answer: A: ab 
Explanation: None