Which set of values appears to show a nonlinear function?

Question

Responses
A (1, 1), (2, 4), (3, 9), and (4, 16)(1, 1), (2, 4), (3, 9), and (4, 16)
B (2, 5), (3.5, 8), (4, 9), and (4.5, 10)(2, 5), (3.5, 8), (4, 9), and (4.5, 10)
C (1, 2), (2, −1), (4, −7), and (6, −13)(1, 2), (2, −1), (4, −7), and (6, −13)
D (−2, 3), (8, −2), (10, −3), and (20, −8)

Answer 1

The set of values that appears to show a nonlinear function is C, (1, 2), (2, −1), (4, −7), and (6, −13).