Astronomy----> White Dwarfs

Question

A white dwarf with a mass of 1.2 solar masses could have been which of these at a previous stage of its life?

A.) an A main sequence star
B.) a neutron star
C.) a G main sequence star
D.) a brown dwarf
E.) an O main sequence star

Answer 1

Spectral classes F, G, K, and M on the main sequence eventually evolve into a white dwarf.  Spectral classes O, B, and A typically supernova and form neutron stars.  So it looks like C is the answer.