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
All of the following are anti-pseudomonal EXCEPT: March 2013 
Select and explain. 
A. Piperacillin, B. Cefoperazone, C. Ceftazidime, D. Cefadroxil
D: Cefadroxil
Answer: D: Cefadroxil 
Explanation: Ans. D i.e. Cefadroxil Spectrum of Cefadroxil Good gram (+)ve (Streptococcus pyogenes (GAS), Staphylococcus) Gram (-)ve (Proteus, E. coli, Klebsiella)