This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Surgery
In the case of carcinoma breast with Her -2 neu immunohistochemistry staining, which of the following score needs fuher FISH study? 
Select and explain. 
A. 0, B. 1+, C. 2+, D. 3+
C: 2+
Answer: C: 2+ 
Explanation: None