Statement I : The rms velocity of gas molecules is doubled, when temperature of gas becomes four times.

Statement II : $\mathrm{c} \propto \sqrt{\mathrm{T}}$

• 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