Which of the following is NOT correct about the non-spore-forming firmicutes?

A) This group includes lactic acid bacteria such as Lactococcus and Lactobacillus.
B) They include the mycoplasmas, which possess cell walls made of pseudopeptidoglycan.
C) Food spoilers such as Leuconostoc and Pediococcus belong to this group.
D) They may have evolved from endospore-forming bacteria.
E) Listeria species include enteric pathogens that contaminate cheese and sauerkraut.