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
Nottingham Prognostic index for CA breast is:- 
Select and explain. 
A. =(0.2 x size ) + grade + nodes, B. =(0.4 x size ) + grade + nodes, C. =(0.6 x size ) + grade + nodes, D. =(0.8 x size ) + grade + nodes
A: =(0.2 x size ) + grade + nodes
Answer: A: =(0.2 x size ) + grade + nodes 
Explanation: Nottingham Prognostic index NPI =(0.2 x tumor size in cm ) + Tumor grade + LN stage Used to select patients for adjuvant treatmentQ