You Would Like to Identify as Many Bacterial Species as Possible

You would like to identify as many bacterial species as possible in the human mouth.Why is biochemical testing not the most efficient and accurate method of completing this task?

A) Since you do not know the growth characteristics and metabolic properties of the bacteria in the mouth,you cannot determine all varieties of media to use for isolation and culture.
B) Bacteria in the mouth are difficult to grow because of the adverse conditions in the oral habitats.
C) Bacteriological media is very expensive,particularly when you would have to use a variety of types to identify the different bacteria.
D) Biochemical testing,using a variety of media,is inaccurate.It has been superceded by more advanced testing procedures.