Answer: You are right its C
Step-by-step explanation:
It cannot be A because there could be 5 red 5 green and i blue
It cannot be B because it could be 5 red 3 blue and 3 green
It cannot be D because it could be 5 red 5 clue and 1 green
It is C because there will be 6 other marbles that are green and blue
Hope this helps mark me brainliest if it did
