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: Pathology
[{'content': 'Which of the following is the earliest light microscopy finding in myocardial infarction \nSelect and explain. \nA. Contraction band necrosis, B. Hypereosinophilia, C. Waviness of fiber, D. Coagulative necrosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Waviness of fiber is the earliest light microscopic finding seen within 30mins to 4 hours.\nEarliest electron microscopy finding is mitochondrial swelling.', 'role': 'assistant'}]