Imagine we have the following RST, where nodes are (key, priority) tuples: Gravizo I 42 E 21 M 40 10 L 20 N 30 Its edge list is the following: (5,21) -> (C, 10) (1,42) -> (5,21) (1,42) -> (M,40) (M, 40) -> (L, 20) (M, 40) -> (N,30) Provide a single (key,priority) tuple that, when inserted into this RST, will make the RST perfectly balanced and will cause exactly 2 AVL rotations during the insertion. Assume priorities must be positive integers and that we cannot have duplicate keys nor priorities