Each of the questions below consists of a question and three statements numbered I, II and III given below it. You have to decide whether the data provided in the statements are sufficient to answer the questions.
Among Peter, Tanu, Ravi, Sonu and David, David is the second tallest and Sonu is the second shortest in the group. Who among them is in the middle when they stand in decreasing order of their heights?
I. Tanu is not the shortest.
II.Ravi is taller tham Sonu but shorter than David.
III.Peter ranks third in height above Sonu when all are arranged according to height.