9. All of the following statements are true except:
(A) Col plasmids encode colicin which kills strains of E. coli.
(B) Rfactors have genes for resistance to antibiotics and these resistance genes are
often within transposons.
(C) Plasmids which carry genes encoding degradative enzymes for pesticides are
called metabolic plasmids.
(D) All bacteriocin genes are on plasmids.
(E) F factor of E. coli is both a conjugative plasmid and an episome.