Give the Focus, Directrix, and Axis for the Parabola $\mathrm { t }$

Multiple Choice

Give the focus, directrix, and axis for the parabola.
-A projectile is thrown upward so that its distance above the ground after $\mathrm { t }$ seconds is $\mathrm { h } = - 15 \mathrm { t } ^ { 2 } + 480 \mathrm { t }$ . What is its maximum height?

A) $3840 \mathrm { ft }$
B) $5760 \mathrm { ft }$
C) $2880 \mathrm { ft }$
D) $1920 \mathrm { ft }$