Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by  $75\times {10}^{-4}\mathrm{N}$ force due to the weight of the liquid. If the surface tension of water is $6\times {10}^{-2}{\mathrm{Nm}}^{-1}$, the inner circumference of the capillary must be

• A

  $1.25\times {10}^{-2}\mathrm{m}$

• B

  $0.50\times {10}^{-2}\mathrm{m}$

• C

  $6.5\times {10}^{-2}\mathrm{m}$

• D

  $12.5\times {10}^{-2}\mathrm{m}$