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': 'Streptococcus and pneumococcus are differentiated by- \nSelect and explain. \nA. Bile salt solubility, B. Growth characteristic, C. Gram staining, D. all', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Bile salt solubility . Pneumococcus is bile soluble, while streptococcus is insoluble. Pneumococcus ferments inulin, streptococcus does not.", 'role': 'assistant'}]