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: Medicine
The ketolide which retain activity against streptococcus pneumoniae that are resistant to macrolide is: 
Select and explain. 
A. Telithromycin, B. Quinupristin, C. Lincomycin, D. Dalfopristin
A: Telithromycin
Answer: A: Telithromycin 
Explanation: Telithromycin is useful in the setting of streptococcal pneumonia that is resistant to macrolide Ref: Harrisons, Edition-18, Page : 1138.