Two equally charged identical pith balls are suspended by identical massless strings as shown in the adjacent figure. If this set up is on Mercury with $$g=3.7\ \text{m/s}^2$$, Earth with $$g=9.8\ \text{m/s}^2$$ and Jupiter with $$g=24.5\ \text{m/s}^2$$, then angle $$2\theta$$ will be

A

maximum on Mercury

B

maximum on Earth, as it has atmosphere

C

maximum on Jupiter

D

the same on any planet as Coulomb force is independent of gravity