Let G=(V, E) be a finite graph with more than one vertex. The complement of G is denoted G and is defined to be the graph whose vertex set is V and whose edge set is the set F of all 2-element subsets of V which are not in E, i.e. F = {ry: 2,Y EV, 2 + y} E. In other words, if X, y EV are distinct vertices then xy € E if and only if zy & F. Show that if G G then 4 divides Vor 4 divides |VI – 1.?