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
[{'content': 'Which of the following is antipseudomonal penicillin ? \nSelect and explain. \nA. Cephalexin, B. Cloxacillin, C. Piperacillin, D. Dicloxacillin', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Piperacillin Drugs acting against Pseudomonas. Penicillins - Piperacillin, Carbenicillin, Ticarcillin, Mezlocillin. Cephalosporins - Ceftazidime, Cefoperazone, Cefepime. Carbapenems - Imipenem, meropenem Monobactams - Aztreonam. Aminoglycosides - Tobramycin, Gentamycin, Amikacin. Fluroquinolones - Ciprofloxacin, Levofloxacin, Norfloxacin.. Other - Polymixin B, Colistin. For most of the infection of pseudomonas, treatment of choice is the combination of an antipseudomonal 13-lactam and an aminoglycoside.", 'role': 'assistant'}]