The table shows the coordinates of several points on the graph of a polynomial.

x y
-4 9
-3 1
-2 -5
-1 -7
0 4
1 2
2 5
3 0
4 -6

according to the table, which point is a root of this polynomial?

a. (3, 0)
b. (2, 5)
c. (-1, -7)
d. (0, -4)