A test particle is moving in circular orbit in the gravitational field produced by a mass density \(\rho \left( r \right) = \frac{K}{{{r^2}}}\). Identify the correct relation between the radius R of the particle's orbit and its period T:
1
T/R is a constant
2
T2/R3 is a constant
3
T/R2 is a constant
4
TR is a constant