This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Anatomy
4 cm breast nodule with ipsilateral mobile LN in axilla staging - 
Select and explain. 
A. T2N1M0, B. T2N2M0, C. T1N1M0, D. T3N2M1
A: T2N1M0
Answer: A: T2N1M0 
Explanation: 4 cm breast nodule i.e. - T2 Ipsilateral, mobile axillary i.e. - N1 No metastasis- Mo hence stage II breast cancer. Ref - Srb's manual of surgery 5e p539