The molar conductance of $\text{NaCl}$, $\text{HCl}$ and ${\text{CH}}_3\text{COONa}$ at infinite dilution are $126.45,426.16$ and $91.0{\text{S cm}}^2{\text{mol}}^{-1}$ respectively. The molar conductance of ${\text{CH}}_3\text{COOH}$ at infinite dilution is:

1. A
   $698.28{\text{S cm}}^2{\text{mol}}^{-1}$
2. B
   $540.48{\text{S cm}}^2{\text{mol}}^{-1}$
3. C
   $201.28{\text{S cm}}^2{\text{mol}}^{-1}$
4. D
   $390.71{\text{S cm}}^2{\text{mol}}^{-1}$