The relation among conductance (G), specific conductance (r) and cell constant (l/A) is :

• A

  $\mathrm{G}=\mathrm{\kappa }\frac{\mathrm{l}}{\mathrm{A}}$

• B

  $\mathrm{G}=\mathrm{\kappa }\frac{\mathrm{A}}{\mathrm{l}}$

• C

  $\mathrm{GK}=\frac{\mathrm{l}}{\mathrm{A}}$

• D

  $\mathrm{G}=\mathrm{\kappa Al}$