You Observe a 0 $\odot$ White Dwarf in a Binary Orbit Around a Main-Sequence

You observe a 0.8 M _$\odot$ white dwarf in a binary orbit around a main-sequence star of mass 1.4 M _$\odot$ . Which of the following is most likely the original mass of the star that became the white dwarf?

A) 0.5 M _$\odot$
B) 1 M _$\odot$
C) 0.8 M _$\odot$
D) 1.4 M _$\odot$
E) 3 M _$\odot$

Correct Answer:

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