MANY U. S. FOOTBALL PLAYERS HAD BRAIN DISEASE, DATA SHOW commonlit article 1. PART A: Which statement identifies the central idea in the text?

A: Many football players' CTE went undiagnosed until after they died, as
they weren't able to recognize the cognitive symptoms.

B Studies of deceased football players' link their participation in the
violent sport with the development of a serious brain disease.

C: CTE is a common brain disease that people experience after being hit
in the head, but it is most common with military personnel and
football players.

D: Studies of deceased football players' brains have shown that people
are more at risk of developing serious brain diseases when they play at
a young age.