(Q6).List the elements of the following sets.

G = {all the factors of 20}

G = {1, 2, 4, 6, 10, 20}
G = {1, 2, 4, 5, 11, 20}
G = {1, 3, 4, 5, 10, 20}
G = {1, 2, 4, 5, 10, 20}