The graph above plots gravitational force versus distance for two asteroids of equal mass (10 billion kg). When the distance between the asteroids is 1,000 km, the gravitational force between them is about 6,700 N.

Based on the trend shown in the graph, predict the force between the asteroids when the distance between them decreases to 850 km.
A.
about 6,700 N
B.
about 74 N
C.
about 9,200 N
D.
0 N