A White Dwarf Is

A white dwarf is

A) the exposed core of a dead star, supported by neutron degeneracy pressure.
B) a cool and very small main sequence star with a mass of less than 1.4 of a solar masses.
C) a hot but very small main sequence star with a mass of less than 1.4 solar masses.
D) the name for the singularity at the center of a black hole.
E) the exposed core of a dead star, supported by electron degeneracy pressure.