1 = "Red
2 = blue
3 = "Yellow
4 = "White
5 = purple
1 2 3 4 5
Purple yellow
Blue red
Red and white
Blue and white
Yellow purple
Because only one person answered the first one, the first one must be red.
So the fifth white answer of C is wrong, so the fifth purple answer of E is right.
Purple is the fifth, so the third yellow that A answered is correct.
So the third blue answer given by D is wrong, so the fourth one is white. So the second one is blue.