The molar conductivity of a conductivity cell filled with $10 \ moles$ of $20 \ mL$ $NaCl$ solution is $\Lambda_{m1}$ and that of another identical cell filled with $20 \ moles$ of $80 \ mL$ $NaCl$ solution is $\Lambda_{m2}$. If the conductivities $(\kappa)$ exhibited by these two cells are the same,the relationship between $\Lambda_{m2}$ and $\Lambda_{m1}$ is $........$

• A
  $\Lambda_{m2} = 2 \Lambda_{m1}$
• B
  $\Lambda_{m2} = \Lambda_{m1} / 2$
• C
  $\Lambda_{m2} = \Lambda_{m1}$
• D
  $\Lambda_{m2} = 4 \Lambda_{m1}$