The Moon Is Heavily Cratered, but the Earth Which "Lives

Multiple Choice

The Moon is heavily cratered, but the Earth which "lives next door" is NOT. Why?

A) the magnetism of the Moon is more likely to attract metallic objects to hit it
B) all objects from space (no matter what their size) burn up in the Earth's atmosphere
C) the craters on the Moon are the result of active volcanoes; the Earth has few volcanoes compared to the Moon
D) the active geology and weather on Earth destroy traces of impacts over millions of years
E) the Earth is heavily cratered, but all the craters are under the ocean