what is (AUB) U (CUB)?
a.) {a, b, c, d, e, f, g, h, x,y,2,0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
b.) {a, 2, 3, 4, 5, 6, 7, 8, 9, 10,g}
C.) {1, 2, 3, 4, 5, g}
d) { e, f, g, h, 1,2}​