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': "Strongest bond out of the following is : \nSelect and explain. \nA. Electrostatic, B. Hydrogen, C. Hydrophobic, D. Vanderwall's", 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Electrostatic', 'role': 'assistant'}]