The correct options are
B We weigh lesser on the Moon.
C There is no air on the Moon.
The Moon, or Chandra or Chaand, is the closest natural object in the night sky to us. It is about 14th of the size of the Earth, i.e. Earth is four times larger than the Moon. The Moon also has no air on its surface, and its gravity is much weaker than that of the Earth. Hence, we weigh lesser on the Moon than on the Earth. Also, the Moon cannot create light of its own. It simply reflects the sunlight and glows.