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
[{'content': "Composition of which of the following intravenous fluids has the closest resemblance to plasma ? \nSelect and explain. \nA. Isotonic saline, B. 1\\/5 isotonic saline, C. 4.3% dextrose, D. Ringer's Lactate", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ringer lactate and hamanns solution are identical to blood One litre of Ringer&;s lactate solution contains: 130 mEq of sodium ion = 130 mmol/L 109 mEq of chloride ion = 109 mmol/L 28 mEq of lactate = 28 mmol/L 4 mEq of potassium ion = 4 mmol/L 3 mEq of calcium ion = 1.5 mmol/L Ringer&;s lactate has an osmolarity of 273 mOsm/L the reference range of serum osmolality is 275-295 mosm/kg (mmol/kg).', 'role': 'assistant'}]