Some say that an asteroid colliding with Earth was responsible for the

Some say that an asteroid colliding with Earth was responsible for the extinction of the dinosaurs. It is indeed likely that such a collision did occur and that it caused the death of the vast majority of dinosaurs. However, new evidence suggests that perhaps tens of thousands of dinosaurs lived far enough from the point of collision that they were not directly killed by the impact or by the drastic change in temperature when immense dust clouds created by the impact blocked the sun. Some other force must have been responsible for the death of these remaining dinosaurs.

If all the statements above regarding the possible asteroid collision with Earth are true, then what conclusion can be drawn from them?


A. No comparably catastrophic asteroid collision with Earth has occurred since the one that killed the vast majority of dinosaurs.

B. Some members of each dinosaur species were killed either directly or indirectly by the impact of the asteroid collision with Earth.

C. All the members of at least one dinosaur species were killed either directly or indirectly by the impact of the asteroid collision with Earth.

D. If the majority of dinosaurs were killed by an asteroid colliding with Earth, some dinosaurs lived at great distances from each other at the time of the collision.

E. It is possible to determine a close estimate of the number of dinosaurs that were killed, either directly or indirectly, by the asteroid collision with Earth.