TGraph *GetGraph(){

  Int_t y[4] = {5,9,8,10};
  Int_t x[4] = {1,2,3,4};

  TGraph *gr = new TGraph(4,x,y);
  gr->Draw();
  gr->SetDrawOption("AB");
  //gr->SetOption("AB");

  return gr;

}
Int_t Test(){
   TGraph *fgr = GetGraph();
   fgr->Draw();
   fgr->Print("AB.png");
}