The Mass of the Moon Is 7 $\times$ 10²² Kg, and the Mass of the Earth Is 5

Multiple Choice

The mass of the Moon is 7.348 $\times$ 10²² kg, and the mass of the Earth is 5.974 $\times$ 10²⁴ kg. The average distance from the center of the Earth to the center of the Moon is 384,400 km. Between the two bodies is a point where the gravitational attractions on a third body will cancel. The distance from the center of the Earth to this point is approximately

A) 288,300 km.
B) 438,000 km.
C) 384,400 km.
D) 343,000 km.