The limiting molar conductivities $\left({\mathrm{\lambda }}^{\mathrm{o}}\right)$ for NaCl, KBr an KCl are 126, 152 and 150 S. cm² mol^–1  respectively. Then$\left({\mathrm{\lambda }}^{\mathrm{o}}\right)$ for NaBr is

• A

  128 S cm² mol^–1

• B

  302 S cm² mol^–1

• C

  278 S cm² mol^–1

• D

  176 S cm² mol^–1