Why Did Carl Sagan Say That We Are Star Stuff

Multiple Choice

Why did Carl Sagan say that we are star stuff?

A) The composition of most stars (mostly hydrogen and helium) is about the same as the composition of our bodies.
B) Cosmic rays reaching Earth from distant astronomical sources may be one source of mutations that help evolution along.
C) Nearly every atom from which we are made once (before the solar system formed) was inside of a star.
D) Nearly every atom from which we are made was once inside our star,the Sun.
E) Sagan thought that all of us have the potential to be movie (or TV) stars like he was.