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': 'Bile solubility is used \nSelect and explain. \nA. Differentiation of staphylococcus from streptococcus, B. Differentiation of group B streptococci from other streptococci, C. Differentiation of pneumococci from streptococci, D. Differentiation of streptococci from neisseria', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Differentiation of pneumococci from streptococci . Pneumococcus is bile soluble, while streptococcus is insoluble.", 'role': 'assistant'}]