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
Which of the following is the earliest light microscopy finding in myocardial infarction 
Select and explain. 
A. Contraction band necrosis, B. Hypereosinophilia, C. Waviness of fiber, D. Coagulative necrosis
C: Waviness of fiber
Answer: C: Waviness of fiber 
Explanation: Waviness of fiber is the earliest light microscopic finding seen within 30mins to 4 hours.
Earliest electron microscopy finding is mitochondrial swelling.