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': "All the following are true of streptococcus except \nSelect and explain. \nA. It's a group of lactic acid producing bacteria, B. Shows adherence to dental enamel, C. Most common in humans, D. Most common in animals", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]