Which of the following ordered pairs is a solution to the equation y = 4x?
Select one:

a.
(16 , 4) , (12 , 3)

b.
(2 , 8) , (1/2 , 2)

c.
(2 , 8) , (12 , 3)

d.
(1/4 , 2) , (1 , 4)