Consider a vertical parallel of semi-circular cross-section dipped in a liquid. Assume that the wetting of the tube is complete. The force of surface tension on the flat part and on curved part of the tube are in the ratio

• A

  2 : $\mathrm{\pi }$

• B

  1 : $\mathrm{\pi }$

• C

  3 : $\mathrm{\pi }$

• D

  2.7 : $\mathrm{\pi }$