Determining the Functional Nature of a Microbial Community by Analysis

Multiple Choice

Determining the functional nature of a microbial community by analysis of bulk DNA samples extracted from environmental samples may be misleading for all of the following reasons EXCEPT

A) DNA is of little use in identifying unknown microbes.
B) some of the DNA recovered may be from non-living organisms.
C) some of the DNA may be from non-functional entities such as spores.
D) the DNA obtained can depend on the extraction method used.