Ekapluto Is an Unknown Planet That Has Two Spherical Moons

Ekapluto is an unknown planet that has two spherical moons in circular orbits. The table summarizes the hypothetical data about the moons. Both moons have low axial spin rates. (G = 6.67 × 10^-11 N ∙ m²/kg²)

The acceleration due to gravity at the surface of Moon B is

A) 0.10 m/s².
B) 0.15 m/s².
C) 0.20 m/s².
D) 0.25 m/s².
E) 0.30 m/s².