Which kind of function best models the data in the table? Graph the data and write an equation to model the data.

x | y
0 | -1
1 | -2
2 | -3
3 | -4
4 | -5

A. linear; y = x - 1
B. linear; y = -x - 1
C. exponential; y = 3^x - 1
D. quadratic; y = x^2 - 1