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: Dental
[{'content': 'The base paste of the condensation poly silicone has a low molecular weight dimethyl siloxane with a terminal-group \nSelect and explain. \nA. Mercaptan group, B. Hydroxyl group, C. Silane group, D. Vinyl group', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]