A metallic wire of density d floats horizontal in water. The maximum radius of the wire such that it may not sink, will be (surface tension of water =T)

• A

  $\sqrt{\left(\frac{2\mathrm{T}}{\mathrm{\pi dg}}\right)}$

• B

  $\sqrt{2\mathrm{\pi Tdg}}$

• C

  $\sqrt{\left(\frac{2\mathrm{\pi T}}{\mathrm{dg}}\right)}$

• D

  $\sqrt{\left(\frac{\mathrm{dg}}{2\mathrm{\pi T}}\right)}$