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
Bile solubility is used 
Select and explain. 
A. 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
C: Differentiation of pneumococci from streptococci
Answer: C: Differentiation of pneumococci from streptococci 
Explanation: Ans. is 'c' i.e., Differentiation of pneumococci from streptococci . Pneumococcus is bile soluble, while streptococcus is insoluble.