A straw of circular cross-section of radius $R$ and negligible thickness is dipped vertically into a liquid of surface tension $\mathrm{T}$. If the contact angle between the liquid and the straw material is $53^{\circ}$. The force acting on the straw due to surface tension of the liquid is $\left(\cos 53^{\circ}=\right.$ $0.6)$

• Correct answer
  A

  $\frac{12 \pi R T}{5}$
• B

  $\frac{6 \pi R T}{5}$
• C

  $\frac{4 \pi R T}{5}$
• D

  $\frac{3 \pi R T}{5}$

Hence, the correct answer is option: 'A'.