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
In treatment of pseudomonas infections, carbenicillin is frequently combined with - 
Select and explain. 
A. Penicillin, B. Gentamycin, C. Ciprofloxacin, D. Amoxycillin
B: Gentamycin
Answer: B: Gentamycin 
Explanation: Ans. is 'b' i.e., Gentamycin o For most of the infection of pseudomonas, treatment of choice is the combination of an antipseudomonal t3-lactam and an aminoglycoside.