Identify A2 for the given set A.
Find Cartesian Product of Sets
A = {1, 2, a, b}

A) {(1, 1), (1, 2), (1, a), (1, b), (2, 1), (2, 2), (2, a), (2, b), (a, b), (a, 2), (a, a), (a, b), (b, 1), (b, 2), (b, a), (b, b)}
B) {(1, 1), (1, 2), (1, a), (1, b), (2, 1), (2, 2), (2, a), (2, b), (a, 1), (a, 2), (a, a), (a, b), (b, 1), (b, 2), (b, a), (b, b)}\
C) {(1, 1), (1, 2), (1, a), (1, b), (2, 1), (2, b), (2, a), (2, b), (a, 1), (a, 2), (a, a), (a, b), (b, 1), (b, 2), (b, a), (b, b)}
D) {(1, 1), (1, 2), (1, a), (1, b), (1, 1), (2, 2), (2, a), (2, b), (a, 1), (a, 2), (a, a), (a, b), (b, 1), (b, 2), (b, a), (b, b)}