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: Pathology
[{'content': 'The extra - cellular polysaccharide synthesized by cariogenic streptococci in the presence of excess sucrose are best described as \nSelect and explain. \nA. Mucopolysaccharide, B. Dextran-like glucan, C. Glycogen-like glucan, D. Amylopectin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]