This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hemodynamics, Subject name: Pathology
[{'content': 'The amount of potassium delivered to this patient after giving one bottle? \nSelect and explain. \nA. 2 mmol, B. 4 mmol, C. 8 mmol, D. 10 mmol', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. (b) 4 mmol.Composition of one liter of Ringer's Lactate solution:* 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/LRingers lactate has an osmolarity of 273 mOsm/L", 'role': 'assistant'}]