A milkman sells the milk at cost price but he mix the water in it and gain 9.09%. The quantity of water in the mixture of 1liter is:

\(\frac{1}{11}\) liters \(\frac{3}{11}\) liters \(\frac{1}{12}\) liters \(\frac{11}{12}\) liters

\(\frac{1}{12}\) liters