Which among the following statements is true for conductivity?

The molar conductivity of $$0.4 \mathrm{~M} \mathrm{~KCl}$$ solution is $$2.5 \times 10^5 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$. What is the resistivity of solution?

What is the number of electrons passed through an electrolyte solution when 1 ampere current is passed for 16.1 minutes?

Which among the following aqueous salt solution is used in conductivity cell to determine cell constant?