9. A = {1, 2, 3) B = {1, 2} kümeleri veriliyor. Buna göre (AXB) n (B X A) kümesi aşağıdakilerden hangisidir? A) {(1, 1), (1, 2), (2, 1), (2, 2), (3, 1); B) {(1, 1), (1, 2), (2, 1), (2, 2), (3, 1), (3, 2)} C) {(1, 1), (1, 2), (1,3), (2, 1), (2, 2)} D) {(1, 1), (1, 2), (1,3), (2, 1), (2, 2), (2,3)} E) {(1, 1), (1, 2), (2, 1), (2, 2)}​