The graph of y squared plus 8 y minus 4 x minus 24 is equal to 0 is a parabola. Where is the vertex located?
A
open paren negative 5 comma negative 4 close parenB
open paren negative 1 comma negative 4 close parenC
open paren negative 6 comma negative 4 close parenD
open paren negative 10 comma negative 4 close paren