Q. If a simple graph G, contains n vertices and m edges, the number of edges in the Graph G'(Complement of G) is

• (A) (n*n-n-2*m)/2
• (B) (n*n+n+2*m)/2
• (C) (n*n-n-2*m)/2
• (D) (n*n-n+2*m)/2