If the Moon were two times farther away from the Earth than it is today, and four times more massive than it is today, which of the following statements would be true?

a.The Moon's orbital period would be different, but its gravitational force on the Earth would remain the same.

b.The Moon's gravitational force on the Earth would be different, but its orbital period would remain the same.

c.Both the Moon's orbital period and its gravitational force on the Earth would remain the same.

d.Both the Moon's orbital period and its gravitational force on the Earth would be different.