Which of the following tables represent(s) an exponential function? List all correct answers.

a.
X| 0, 1, 2, 3
Y| 0, 0, 0, 0

b.
X| 0, 1, 2, 3
Y| 1, 1, 1, 1

c.
X| 0, 1, 2, 3
Y| 2, 4, 8

d.
X|0, 1, 2, 3
Y|1, -1, 1, -1
y
e.
X| 0, 1, 2, 3
y |1, 2, 3, 4

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.