The resistance of 0.01M of solution of an electrolyte was found to be $150\Omega$ at $25^oC$.Calculate equivalent conductance.cell constant =$0.80cm^{-1}$ [For given solution $n$ factor =2]

Question

$\begin{array}{1 1}(a)\;265\\(b)\;278\\(c)\;285\\(d)\;255\end{array}$