If y = 5x − 3, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

a
{(2, 5), (−3, −12), (−4, −18)}

b
{(−1, −8), (0, −3), (3, 12)}

c
{(1, 4), (7, 25), (3, 10)}

d
{(5, 20), (6, 12), (1, 9)}