Let S be a subset of the set of integes recursively defined by Basis Step: 5 E S and 16 E S Recursive Step: If x E S and y E S, then x-yES. What are all of the elements in S that are between 4 and 20? 5, 6, 11,16 6, 10, 11 5, 16 5,6, 10, 11, 16