Jordan has a jar of marbles with 2 red marbles, 8 blue marbles, 2 green marbles, and 1 yellow marble. What could the ratio of 1/2 represent?
A) Yellow marbles: red marbles

B) Yellow marbles : Green marbles

C) Green marbles : blue marbles

D) Green marbles: yellow marbles

E) Blue marbles: total marbles

F) Green and red marbles: blue marbles