TOEFL Listening: TPO-TOEFL阅读TPO - 49OYCCTW51A14R24N$

According to paragraph 6, what is the significance of the similarity in composition between chondrites and the Sun? A. It indicates what the matter from which planets were formed was probably like. B. It may explain howthe Sun originally developed. C. It helps scientists estimate the variations in the chemical composition of different meteors. D. It suggests that most meteorites may contain large quantities of volatile elements.