Find the vertices, foci, axes, center (if an ellipse or a hyperbola) and asymptotes (if a hyperbola) of the conic section $$x^2+3 y^2 = 9$$

The conic section is
A. An ellipse
B. A hyperbola
C. A Parabola

The vertices are at
A. $(\pm \sqrt{6},0)$
B. $(0,\pm 9)$
C. $(0,0)$
D. $(\pm 3,0)$
E. $(0,\pm \sqrt{3})$
F. $(\pm 9,0)$

The foci are at
A. $(0,\pm \sqrt{6})$
B. $(\pm \sqrt{6},0)$
C. $(\pm 9,0)$
D. $(\pm 3,0)$

The focal axis and the conjugate axis are
A. $x=0$ and $y=0$ respectively.
B. $x=9$ and $y=3$ respectively.
C. $y=3$ and $x=9$ respectively.
D. $y=0$ and $x=0$ respectively.

The conic section's center is at
A. $(1,1)$
B. $(3,3)$
C. $(-3,-3)$
D. $(3,9)$
E. $(0,0)$