Which of the following statements about bacterial genome is NOT true?

A)All bacteria contain a single circular double-stranded DNA as their genome.
B)Some bacteria may have linear chromosomes instead of circular.
C)In addition to chromosomes, many bacteria possess small extrachromosomal DNA called plasmids.
D)Each plasmid contains an origin of replication that allows independent replication for its maintenance.
E)The F factor, which is important for bacterial conjugation, is found as a circular episome of E.coli.