According to uniformitarianism, which statement is true?

AThe rate of geologic processes change over time, but the processes themselves remain the same.
BThe rate of geologic processes decrease over time, and the processes themselves change.
CThe rate of geologic processes remain the same over time, and the processes themselves remain the same.
DThe rate of geologic processes remain the same over time, but the processes themselves change.

Plz Help im doing the test right now