Directions: The following questions are accompanied by three statements (I), (II) and (III). You have to determine which statements(s) is/are sufficient/necessary to answer the following question.

What is the initial quantity of the Milk in vessel P?

I: Ratio of the Milk and water in vessel P and Q is 8 : 7 and 3 : 2 respectively.

II: Mixture Q has 60 liters and it is poured into P and then the ratio of the Milk and water in vessel P becomes 17 : 13.

III: 36 liters of the mixture from vessel R is taken out and is poured into vessel P, and then the ratio of the Milk to water in vessel P is 8 : 9.