(A) Triassic, Jurassic, and Cretaceous are all periods within the Mesozoic Era, and they are listed in their correct chronological order. (B) Paleozoic, Mesozoic, and Cenozoic are the three main eras of geological time, and they are listed in their correct chronological order. (C) Devonian, Silurian, and Carboniferous are all periods within the Paleozoic Era, and they are listed in their correct chronological order.