If y = 7x - 5, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?
A: {(0, -5), (2, 9), (-3, -26)}
B: {(-5, 0), (9, 2), (-26, -3)}
C: {(1, 3), (6, 18), (8, 15)}
D: {(2, 7), (1, 6), (3, 13)}