Simplify the rational expression. State any restriction on the variable. k2−4k−32k+4 (1 point) Responses k+8; k≠−4 k+8; k≠−4 k−8; There are no restrictions k−8; There are no restrictions k−8; k≠−4 k−8; k≠−4 k+8; There are no restrictions

k+8; k≠4