A bag has 5 balls: 1 red (R), 1 green (G), 1 yellow (Y), 1 blue (B), and 1 orange (0)
You randomly choose a ball. What is the sample space?
OA. (RG, Y, B, O)
OB. (R, G, Y, B, P)
Oc. (G, )
OD. (R, G, Y, B)

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.