The Ages of Meteorites Have Been Found Through Radioactive Dating

Multiple Choice

The ages of meteorites have been found through radioactive dating. One major difficulty with this technique is that:

A) the original abundances of the elements are not precisely known.
B) relatively large samples (approximately 10 cm in diameter) are needed for testing.
C) the half-lives of the elements are not precisely known.
D) the age of the meteorites is greater than the half-life of any of the radioactive elements.