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: Microbiology
[{'content': 'The binding site for complement on the lgG molecule is in the \nSelect and explain. \nA. VL domain, B. CL domain, C. CH1 domain, D. CH2 domain', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]