Two particles of masses m₁ and m₂, m₁ > m₂ move in circular paths under the action of their gravitational attraction. While doing so, their separation remains constant and equals 'r' . Radius of circular path of m₂ is:

• A

  $\frac{\mathrm{r}}{2}$

• B

  $\frac{{\mathrm{m}}_1}{{\mathrm{m}}_2}\mathrm{r}$

• C

  $\frac{{\mathrm{m}}_2}{{\mathrm{m}}_1+{\mathrm{m}}_2}\mathrm{r}$

• D

  $\frac{{\mathrm{m}}_1}{{\mathrm{m}}_1+{\mathrm{m}}_2}\mathrm{r}$