The Moon Is in the Habitable Zone of the Sun

The Moon is in the habitable zone of the Sun at the same distance as the Earth but is not habitable. How can this be?

A) the Moon did have water on its surface in the past, but it was destroyed by high-energy particles from the Sun
B) the Moon has never had water on its surface at any time
C) the Moon is too small to retain an atmosphere necessary for liquid water to be stable
D) the Moon did have water on its surface in the past, but it was blasted off the surface by impacts