The distance between the sun and the earth is r and the earth takes time t to make one complete revolution around the sun. Assuming the orbit of the earth around the sun to be circular, the mass of the sun will be proportional to

• A

  $\frac{r}{\mathrm{T}}$

• B

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

• C

  $\frac{{\mathrm{r}}^3}{{\mathrm{T}}^2}$

• D

  $\frac{{\mathrm{r}}^2}{{\mathrm{T}}^3}$