3. Which statement is not true for the Proteobacteria? (A) Mitochondria likely originated from the genus Rickettsia. (B) The genus Shewanella is useful for the bioremediation of radionuclide-contaminated environments. (C) Under anaerobic conditions, E. coli facilitates mixed acid fermentation that can produce multiple acids (acetic, succinic, formic, lactic), ethanol, H2 and CO2. (D) Yersinia pestis is the causative agent for the disease called plaque. (E) The genus Klebsiella contains pathogens that cause diverse diseases of plants, including blights and wilts.