Given the sets A = {1, 2, 3}, B = {3, 4}, C = {4, 5, 6}, then
A ∪ (B ∩ C) is
{3}
{1, 2, 3, 4}
{1, 2, 4, 5}
{1, 2, 3, 4, 5, 6}
B ∩ C = {4}, ∴ A ∪ (B ∩ C) = {1, 2, 3, 4}.