$1.$What is the primary difference between ideal and non$-$ideal reactors?

A$)$ Ideal reactors have perfect mixing, while non$-$ideal reactors exhibit mixing imperfections.

B$)$ Ideal reactors operate at constant temperature, while non$-$ideal reactors do not.

C$)$ Ideal reactors have infinite volume, while non$-$ideal reactors have finite volume.

D$)$ Ideal reactors are only used in theoretical studies, while non$-$ideal reactors are practical.