In preorder, root comes at the beginning of the traversal sequence and in postorder, root comes at the last of the traversal sequence. So, out of the given sequences only 1 and 2 are having such kind of order i.e K at the beginning and at the last.
Therefore, 2 is the preorder and 1 is postorder and the left sequence i.e 3 will definitely be inorder.
So, option d is correct.