In contrast to the red giant stage, the white dwarf stage will cause A. the habitable zone to move outward past our solar system's borders.
B. The habitable zone to move back towards Saturn and its moons.
C. the habitable zone to rebound and return to Earth again.
D. The entire solar system to implode, destroying all planets.

(this question is like a mix of science and language arts because I'm on reading plus)