Function S
x y
–2 –9
0 1
4 21
6 31

The graph models function R. The table of values models function S. Which statement is true about these functions?

A) The two functions have the same rate of change.
B) Both functions do not have a constant rate of change.
C) Function R has a greater rate of change than Function S.
D) Function S has a greater rate of change than Function R.