This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
Concentration of sodium in RL is 
Select and explain. 
A. 154, B. 120, C. 130, D. 144
C: 130
Answer: C: 130 
Explanation: Sodium concentrations in various crystalloids and colloid Hamann's (RL) 130mmol/L Normal saline (0.9% NaCl) 154mmol/L Dextrose saline (4% dextrose in 0.18 saline) 30mmol/L Gelofusine 150mmol/L Hemacel 145 mmol/L Hetastarch - Lactated potassium saline injection (Darrow's solution) 121mmol/L Ref: Bailey and love 27th edition Pgno :281