This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid, Electrolyte and Nutrition, Subject name: Surgery
All of the following are true about anticoagulants except: 
Select and explain. 
A. Maximum storage with CPDA-1 is 35 days, B. Maximum storage with SAGM is 42 days, C. Sodium diphosphate helps in synthesis of ATP, D. Citrate Prevents coagulation by chelating calcium
C: Sodium diphosphate helps in synthesis of ATP
Answer: C: Sodium diphosphate helps in synthesis of ATP 
Explanation: Whole Blood Anticoagulant used Maximum storage ACD/CPD/CP2D 21 days CPDA-1 (citrate phosphate dextrose adenine) 35 days SAGM (Saline adenine glucose mannitol) 42 days Actions of ingredients of Anticoagulant solution Glucose - ATP generation by glycolysis Adenine -Synthesis of ATP - Increase shelf life of RBC to 42 days Citrate - Prevents coagulation by chelating calcium Sodium diphosphate - Maintain optimum pH