Let A = {(1,2}, {b,c}, X, Y, Z} and B = {(1,2}, {a,b,6,d}, X, Y} be classes. By the definition of union: A U B = {x | (x € A) or (x € B)}, what is the class U B?
Select one: {X, Y, {1, 2}, {a, b, c}, {a, b, €, d}} c{X, Y, Z, {1, 2}, {a, b, & d}} None of the other answers necessarily true:
{(1, 2}, {a, b, c}, {X, Y, Z}, {a, b}.