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: Biochemistry
[{'content': 'True about denaturation of protein is all except? \nSelect and explain. \nA. Unfolding occurs, B. Disruption of secondary structure occurs, C. Sequence of amino acids remain the same, D. Biological activity is retained', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]