What Is the Major Difference Between Authoritarianism and Totalitarianism

What is the major difference between authoritarianism and totalitarianism?

A) Authoritarianism is a "syndrome," while totalitarianism is an ideology.
B) Totalitarianism places importance on a single-minded drive to remake society according to a utopian vision, while authoritarianism is more pluralist in its ideological connections.
C) Authoritarianism places importance on a single-minded drive to remake society according to a utopian vision, while totalitarianism is less tied to a single ideological platform.
D) Totalitarianism is a purely historical phenomenon, while authoritarianism is more modern.