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': 'Bacterial extracellular polysaccharide production is\na) a property of only Streptococcus mutans\nb) a prerequisite for cariogenicity\nc) a factor mediating attachment of bacteria to teet\nd) an essential component of dental plaque\ne) characteristic of all streptococcus \nSelect and explain. \nA. a e is false b c d is true, B. a b c is false d e is true, C. b c d is false a e is true, D. c d e is false a b is true', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]