Individual colonies appear across a Kirby - Bauer test plate after incubation. Which of the following errors could have contributed to this result? The plate was not swabbed in multiple directions. What other error could have contributed to this result?
1) The plate was not incubated at the correct temperature.
2) The plate was not incubated for the correct amount of time.
3) The plate was not properly sealed during incubation.
4) The plate was contaminated with bacteria from another source.
