<prompt> Combination of amoxycillin with clavulanic acid is active against all of the following organisms exceptMRSAPenicillinase producing Staph, aureusPenicillinase producing N. gonorrhoeaBeta lactamase producing E. coli  <response>: Ans. A MRSARef: GG 1479Methicillin resistance occurs due to altered penicillin binding proteins, therefore cannot be reversed by b-lactamase inhibitor like clavulanic acid 