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: Surgery
Prognostic stage groups in carcinoma breast include all except 
Select and explain. 
A. Tumour size, B. Grade, C. HER-2 status, D. Age
D: Age
Answer: D: Age 
Explanation: Prognostic stage groups include TNM plus grading, and status of biomarkers HER-2, ER, and PR Ref: AJCC 8th edition