Which Statement About the Pathogenic Strain O157:H7 of E

Multiple Choice

Which statement about the pathogenic strain O157:H7 of E.coli is true?

A) It differs from the harmless laboratory strains of E. coli by only a few genes.
B) It shares several genes with other pathogenic bacteria, suggesting extensive genetic exchange among these species.
C) It is the primary cause of tuberculosis in the United States.
D) It kills more than 70,000 people a year in the United States.
E) It is not classified as one of the "superbugs" that share genes for antibiotic resistance.