Read the excerpt from The Republic by Plato.

But in reality justice was such as we were describing, being concerned however, not with the outward man, but with the inward, which is the true self and concernment of man: for the just man does not permit the several elements within him to interfere with one another, or any of them to do the work of others,—he sets in order his own inner life, and is his own master and his own law, and at peace with himself.

Which rhetorical device is used in the underlined portion of the excerpt?

NOT A. asyndeton
B. antithesis
C. chiasmus
D. synecdoche