The Following Is NOT Correct About Microorganisms in the Phylum

The following is NOT correct about microorganisms in the phylum Thermotogae:

A) They are among the most extreme bacterial hyperthermophiles.
B) Archaeal genes have been transferred horizontally to them.
C) They have fast doubling rates and high mutations rates.
D) They are Gram-negative sheathed rods.
E) Thermus aquaticus, source of a DNA polymerase used in PCR, belongs to this phylum.