Which of the Following Types of Experimental Evidence Suggests That

Multiple Choice

Which of the following types of experimental evidence suggests that a particular organism thought to be part of the human microbiome is,in fact,just a laboratory contaminant?

A) Absence of ribosomal RNA evidence in a specific host location where the organism was believed to have colonized
B) Presence of ribosomal RNA evidence in a specific host location where the organism was believed to have colonized
C) Absence of ribosomal RNA evidence in a specific host location where the organism was not expected to have colonized
D) Presence of ribosomal RNA evidence in a specific host location where the organism was not expected to have colonized