Which of these numbers are greater than 1/4?

Question

Either 2/8 4/6 9/12 3/5 or 5/12?

Answer 1

Once you answer that question this puzzle says my denominator is multiple of three? Then i am equalivilant to 2/3 i am.........

Answer 2

2/8 = 30/120
4/6 = 80/120
... and so on.

then, 2/3 = 4/6 = 6/9 = 8/12 ...