Which equation has a graph that is a parabola with a vertex at open paren negative 1 comma negative 1 close paren ?
A
y is equal to open paren x plus 1 close paren squared plus 1B
y is equal to open paren x plus 1 close paren squared minus 1C
y is equal to open paren x minus 1 close paren squared minus 1D
y is equal to open paren x minus 1 close paren squared plus 1