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Drug x and y showed synergistic effect to kill a bacteria. Which of the following drugs represents the best combination?

a. Amoxicillin and cefepime
b. ceftazdime and erythromycin
c. ciprofloxacin and minocycline
d. isonizid and fluconzazole
e. minocycllin and ceftazidime
f. piperacillin and erythromycin
g. tobramycin and ampicillin

g.

thanks. please give a explain

aminoeglycosides(tobramycin) r known for causing synerginicity with B-lactam antibiotics(ampicillin or cephalosporin)