TOEFL Listening: TPO-TOEFL听力TPO - 24TSQ179A03_5TFER$

According to the professor, what feature of a meteoroid generally determines whether the meteoroid becomes a meteorites? A. Whether it was originally part of a larger meteoroid B. Whether it originated in the inner or outer solar system C. What proportion of iron and stone it contains D. How large it is when it enters the Earth's atmosphere