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
Which of the following is not true of Diplococcus pneumoniae - 
Select and explain. 
A. Bile solubility, B. Optochin resistance, C. Causes Meningitis, D. Possesses capsule
B: Optochin resistance
Answer: B: Optochin resistance 
Explanation: Ans. is 'b' i.e., Optochin resistance . Pneumococcus is optochin senstive (not resistant). The senstivity of pneumococci to optochin is useful in differentiating them from streptococci.