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 has least ability to regenerate? \nSelect and explain. \nA. Liver, B. Bone, C. Collagen, D. Striated muscle', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]