The correct option is C All of the above
KOH when dissolves in water, dissociates completely to form the ions K+ and OH− .
When NaOH is dissolved in water it completely dissociates into the ions Na+ and OH−.
Similarly, when LiOH is dissolved in water it undergoes complete dissociation to form the ions Li+ and OH−.
Thus, all the above mentioned bases undergo complete dissociation into ions when dissolved in water. Thus all the above mentioned bases are strong electrolytes.