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
A female presents with a breast lump of size 6 cm. On examination axillary lymph nodes on ipsilateral side are found to be enlarged and fixed. TNM staging is: 
Select and explain. 
A. T3 N2, B. T2 N2, C. T4 N2, D. T1 N1
A: T3 N2
Answer: A: T3 N2 
Explanation: Tumour size more than 5 cm corresponds to T3 and finding of ipsilateral axillary lymph node, which are fixed, corresponds to N2a therefore the TNM staging in this case is T3 N2. Ref: Schwaz 9/e, Page 452 ; CSDT 13/e, Page 291