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
Pneumococcus can be differentiated from streptococcus by - 
Select and explain. 
A. Type of hemolysis, B. Gram staining, C. Growth characteristics, D. Bile solubility
D: Bile solubility
Answer: D: Bile solubility 
Explanation: None