This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Electrolyte Imbalance, Subject name: Medicine
[{'content': 'Pseudo-hypokalemia occurs due to? \nSelect and explain. \nA. Leukemia, B. Leucopenia, C. Inappropriate fist clenching/tight compression of muscles prior to sampling, D. Use of a thin bore needle during sampling', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In Leukemia there is In vitro shift of K+into cells and if sample is kept for long outside and it may show Pseudo-hypokalemia. Pseudo K??" Leukemia Pseudo K??\' Thin bore needle, Excessive clenching of the fist, Hemolysis Pseudo Na??" Lipids??\' , Multiple myeloma', 'role': 'assistant'}]