A bag contains 15 marbles. Six are red, three are blue, and the rest are green or yellow. If the ratio of green marbles to blue marbles is 2 to 3, what is the ratio of yellow marbles to red marbles?
Question 2 options:
A.3/6
B.4/6
C.4/15
D.6/4
PLS HELP I ONLY HAVE 15 POINTS