(Answered)-A particular antibiotic results in a zone of inhibition when - (2025 Updated Original AI-Free Solution

Question

1. A particular antibiotic results in a zone of inhibition when tested with?E. coli?using the Kirby-Bauer test. However, small colonies of bacteria are noted within the zone of inhibition. These colonies:

   A.	the colonies could be?E. coli?resistant to the test antibiotic
   B.	the colonies could be a contaminating organism OR?E. coli?resistant to the test antibiotic
   C.	there is no logical explanation for this observation
   D.	the colonies could be from a contaminating organism resistant to the antibiotic