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: Pharmacology
Anaerobic streptococci; which is the most effective - 
Select and explain. 
A. Penicillin, B. Clindamycin, C. Vancomycin, D. Erythromycin
B: Clindamycin
Answer: B: Clindamycin 
Explanation: Ans. is 'b' i.e., Clindamycin Amongst the given options, clindamycin is most active against anaerobes.