The main idea of the article is that kids have helped to discover some prehistoric things. Which key detail from the article supports that MAIN idea?
A.
Jackson Hepner remembers finding the mammoth tooth.
B.
It was in July 2019 while he was visiting his uncle in Ohio.
C.
He was searching for marine fossils in 2015.
D.
Mehling had never seen one like it in 30 years of fossil hunting in New Jersey.