The limiting molar conductivities $$\Lambda^\circ$$ for NaCl, KBr and KCl are $$126, 152$$ and $$150$$ S cm$$^2$$ mol$$^{-1}$$ respectively. The $$\Lambda^\circ$$ for NaBr is

A

$$128$$ S cm$$^2$$ mol$$^{-1}$$

B

$$302$$ S cm$$^2$$ mol$$^{-1}$$

C

$$278$$ S cm$$^2$$ mol$$^{-1}$$

D

$$176$$ S cm$$^2$$ mol$$^{-1}$$