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
Which of the iollowing drug is used against bacteria Pseudomonas aeruginosa? 
Select and explain. 
A. Piperacillin-Tazobactum, B. Cefotaxime, C. Streptomycin, D. Cephalexin
A: Piperacillin-Tazobactum
Answer: A: Piperacillin-Tazobactum 
Explanation: Ans. a. Piperacillin-Tazobactum