3) Let A = {1, 3, 5, 15, 18} and R be defined by xRy if and only if xly. You may copy/paste/move/resize the images below as needed for your digraph and Hasse diagram. a) Draw the digraph of A. b) Draw the Hasse diagram of A. c) Give a subset of B that is linearly ordered and contains at least three elements. 1 3 5 15 18 18