This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Left bundle branch block (LBBB) on ECG can suddenly develop in all of the following except \nSelect and explain. \nA. Acute MI, B. Ashman syndrome, C. Hypokalemia, D. Hyperlcalernia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]