Give the Focus, Directrix, and Axis for the Parabola $2 \mathrm{~m}$

Multiple Choice

Give the focus, directrix, and axis for the parabola.
-A radio telescope has a parabolic surface. If it is $2 \mathrm{~m}$ deep and $16 \mathrm{~m}$ wide, how far is the focus from the vertex?

A) $32 \mathrm{~m}$
B) $4 \mathrm{~m}$
C) $8 \mathrm{~m}$
D) $2 \mathrm{~m}$