We are swapping two different digits of a number in each step. If we start with the number 12345, which of the following cannot be got after an even number of steps?<spanclass=′latex−bold′>(A)</span> 13425<spanclass=′latex−bold′>(B)</span> 21435<spanclass=′latex−bold′>(C)</span> 35142<spanclass=′latex−bold′>(D)</span> 43125<spanclass=′latex−bold′>(E)</span> 53124 permutation statisticsInversions in permutations