The equivalent conductance of $NaCl$ at concentration $C$ and at infinite dilution are $\lambda_C$ and $\lambda_{\infty}$ respectively. The correct relationship between $\lambda_C$ and $\lambda_{\infty}$ is given as: (Where the constant $B$ is positive)

• A
  $\lambda_C = \lambda_{\infty} + (B)C$
• B
  $\lambda_C = \lambda_{\infty} - (B)C$
• C
  $\lambda_C = \lambda_{\infty} - (B) \sqrt{C}$
• D
  $\lambda_C = \lambda_{\infty} + (B) \sqrt{C}$