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
Which one of the following clinical findings excludes the diagnosis of polymyositis ? 
Select and explain. 
A. Neck muscle involvement, B. Extraocular muscle involvement, C. Dysphagia, D. Abdominal muscle involvement
B: Extraocular muscle involvement
Answer: B: Extraocular muscle involvement 
Explanation: None