Let A = {10, 20, 30, 40, 50, 60} and B = {10, 40, 60}. What is A ∩ B?
{10, 40}
{40, 60}
{10, 40, 60}
{10, 20, 30, 40, 50, 60}
{10, 40}
{40, 60}
{10, 40, 60}
{10, 20, 30, 40, 50, 60}