Use the Following Figure to Answer the Question

Multiple Choice

Use the following figure to answer the question:
-If the Earth had two identical moons in one circular orbit,and the moons were as far apart in that orbit as they could be,the center of gravity of the Earth-moons system would be

A) at the center of the Earth.
B) inside the Earth,but off center.
C) outside the Earth,but within the orbital path of the moons.
D) outside the Earth,but beyond the orbital path of the moons.