Statement I : At critical temperature, surface tension of a liquid becomes zero.

Statement II : At critical temperature, intermolecular forces for liquids and gases become equal. Liquid can expand without any restriction.

• A

  If both statement I and statement II are true and statement II is the correct explanation of statement I.
   

• B

  If both statement I and statement II are true but statement II is not the correct explanation of statement I.
   

• C

  If statement I is true but statement II is false 
   

• D

  If both statement I and statement II are false