This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pathology
[{'content': 'Which is the earliest histopathological change in myocardial infarction? \nSelect and explain. \nA. Stretching and waviness of fibers, B. Neutrophilic infiltration, C. Coagulative necrosis, D. Fibrovascular response', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Time frameLight microscopy0-6 hoursNo change, stretching and waviness of fibres6-12 hoursCoagulative necrosis begins with neutrophilic infiltration48-72 hoursCoagulative necrosis is complete3rd-7th dayInitiation of resorption of necrosed fibres and fibrovascular response3rd weekNecrosed muscles removed and in growth of fibrocollagenous tissue.', 'role': 'assistant'}]