Use the Venn diagram shown.

A Venn diagram with overlapping circles A and B. Circle A includes the elements 1, 3, 7, 8, and 11. Circle B includes elements 2, 3, 6, 7, and 12. The area outside the circles is labeled Q, which contains elements 9 and 17.

What are the elements of (A ∩ B)?

{1, 2, 3, 6, 7, 8, 11, 12}
{1, 2, 6, 8, 11, 12}
{9, 17}
{3, 7}