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': 'The organ most vulnerable to ischaemia due to shock- \nSelect and explain. \nA. Lungs, B. Adrenals, C. Kidney, D. Heart', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The susceptibility of a tissue to hypoxia influences the likelihood of infarction.\nNeurons are most sensitive to hypoxia (irreversible changes develop in 3-4 minutes) followed by myocardial cells (irreversible changes develop in 20-40 minutes).\nFibroblasts are amongst the most resistant cells to hypoxia.', 'role': 'assistant'}]