Q72

A Binary Search Tree (BST) stores values in the range $37$ to $573$. Consider the following sequence of keys. Which of the following statements is TRUE? I, II and IV are inorder sequences of three different BSTs I is a preorder sequence of some BST with $439$ as the root II is an inorder sequence of some BST where $121$ is the root and $52$ is a leaf IV is a postorder sequence of some BST with $149$ as the root