Mycobacteria are characterized by all of the following EXCEPT:

A、They are slow-growing because it takes the bacteria a long time to synthesize numerous molecules of mycolic acid;

B、Although there are almost 75 species of mycobacteria, most mycobacterial human diseases are caused by Mycobacterium tuberculosis;

C、They are protected from lysis once they are phagocytized;

D、They stain well with Gram stain;

E、They are capable of intracellular growth