Two Stars of Masses M and 6M Are Separated by a Distance

Multiple Choice

Two stars of masses M and 6M are separated by a distance D. Determine the distance (measured from M) to a point at which the net gravitational force on a third mass would be zero.

A) 0.41 D
B) 0.33 D
C) 0.37 D
D) 0.29 D
E) 0.14 D