Imagine If You Built a Time Machine and Successfully Traveled

Imagine if you built a time machine and successfully traveled 2 billion years backward in time. What would happen?

A) You would see dinosaurs roaming Earth.
B) You would see numerous multicellular species on Earth.
C) You probably would be killed by the ongoing heavy bombardment of Earth.
D) You would die due to lack of oxygen.
E) You would be floating in space because Earth hadn't formed yet.