If the moon were twice as far from earth as it now , which of the following would be true?
A . Earth's gravitational pull on the moon would be the same as it is now because distance does not affect earth's gravity.
B . The gravitational pull would be zero.
C . The gravitational pull between the moon and earth would decrease because the distance between the moon and earth would have increased.
D . The gravitational pull between the moon and earth would be the same because their masses has not changed.