The molar conductivity of cation and anion of salt BA are 180 and 220 mhos `cm^(2) "mol"^(-1)` respectively. The molar conductivity of salt BA at infinite dilution is -

A. `90 Omega^(-1)cm^(2)*"mol"^(-1)`

B. `110Omega^(-1)cm^(2)*"mol"^(-1)`

C. `200Omega^(-1)cm^(2)*"mol"^(-1)`

D. `400Omega^(-1)cm^(2)*"mol"^(-1)`