The moon lacks life and varies dramatically in temperature.If we could keep a layer of water spread on the surface of the moon,what effect would it have?

A)Physical conditions would remain the same.
B)Because water has a high heat of vaporization,the temperatures would rise to the upper extremes.
C)The temperatures would drop to the lower extremes.
D)Water would absorb and hold heat and moderate the temperature extremes.
E)Life would be possible,but it would have to withstand these extremes in temperature.