A White Dwarf Star, the Surviving Core of a Low-Mass

A white dwarf star, the surviving core of a low-mass star toward the end of its life, can be found on the Hertzsprung-Russell diagram

A) at the upper-left end of the main sequence since its surface temperature is extremely high.
B) at the bottom end of the main sequence, along which it has evolved throughout its life.
C) below and to the left of the main sequence.
D) above and to the right of the main sequence since it evolved there after its hydrogen-fusion phase.