Why Are the Largest Craters We Find on the Moon

Multiple Choice

Why are the largest craters we find on the Moon and Mercury so much larger than the largest craters we find on the Earth?

A) because the Moon and Mercury have larger gravity than Earth, and this can attract larger pieces
B) because the Moon and Mercury do not have atmospheres to protect them from the largest pieces that can hit
C) because the Earth's magnetic field protects us from larger impacts
D) because the Moon and Mercury have much larger volcanic eruptions
E) because the largest craters were made early in each world's history, and geologic activity has erased all traces of this early period on the Earth's surface