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': 'Folding of protein chain is due to : \nSelect and explain. \nA. Amide bond, B. Hydrogen bonds, C. Phosphodiesterase bonds, D. Disulphide bond', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Hydrogen bond', 'role': 'assistant'}]