According to paragraph 4, why are scientists confident that the age of the oldest meteorites they studied is also the age of the solar system? A. Radiometric dating has been proven to be reliable. B. The oldest rocks found on the surface of the Moon are the same age as the meteorites. C. No meteorites have been found that are younger than 4.6 billion years old. D. Meteorites on the Moon are the same age as those on other planets.