Kylie randomly selects two vertices of a rectangle. What is the probability that the two chosen vertices are adjacent?<spanclass=′latex−bold′>(A)</span>31<spanclass=′latex−bold′>(B)</span>21<spanclass=′latex−bold′>(C)</span>32<spanclass=′latex−bold′>(D)</span>65<spanclass=′latex−bold′>(E)</span>1