A) Draw and label the single binary tree with 7 nodes { A B C D E F G } such that preorder travesal give A B C D E F G and postorder travesal provides F G E D C A B. Or describe why there is no such a tree.
B) Draw and label the single binary tree with 7nodes { A B C D E F G } such that preorder travesal give A B C D E F G and a inorder travesal provides B D C A F E G. Or describe why there is no such a tree.