What is the vertex and the axis of symmetry of the quadratic function graphed below?
AThe vertex is (0, 0), and the axis of symmetry is x = 6.
BThe vertex is (6, 3), and the axis of symmetry is x = 6.
CThe vertex is (4, 8), and the axis of symmetry is x = 6.
DThe vertex is (6, 3), and the axis of symmetry is y = 3.
AThe vertex is (0, 0), and the axis of symmetry is x = 6.
BThe vertex is (6, 3), and the axis of symmetry is x = 6.
CThe vertex is (4, 8), and the axis of symmetry is x = 6.
DThe vertex is (6, 3), and the axis of symmetry is y = 3.