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.