A = {1, 2, 5, 7}B = {3, 4, 6, 7}C = {0, 5, 8, 9}
Find A U B.
A){0,1,2,3,4,5,6,7,8,9}
B){1,2,3,4,5,6,7}
C){1,2,3,4,7}
D){3,4,5,6,7}