Why Are Fossils from Older Species Found Deeper in the Earth

Multiple Choice

Why are fossils from older species found deeper in the earth than those from more recent species?

A) Layers of sediments accumulate every year, covering older fossils in more layers.
B) Older species were more likely to burrow underground.
C) Modern species can swim better than older species.
D) Older species were more likely to be trapped in sediments and form fossils than modern species.