In the television series "Cosmos" the astronomer Carl Sagan used to say, "We are all made of star stuff." What did he mean by that?
A) All of the chemical elements were formed during the big bang when the universe began, so we are like the stars.
B) All of the chemical elements in our solar system were forged in an ancient star that went supernova.
C) The earth has incorporated large amounts of chemical material from the solar wind, so our bodies carry this material.
D) We all have to potential to be stars.
B
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