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
Not true about piperacilline is: 
Select and explain. 
A. Active against pseudomonas aeruginosa, B. Inhibits Beta-lactamase, C. It is a ureido penicillin, D. Given parenterally
B: Inhibits Beta-lactamase
Answer: B: Inhibits Beta-lactamase 
Explanation: None