This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'The ubiquitous pump is: \nSelect and explain. \nA. Sodium potassium pump, B. Sodium pump, C. Potassium pump, D. All', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Sodium potassium pump is the ubiquitous pump as it is present in sll the cells', 'role': 'assistant'}]