A.1 B.6 C.20 D.10
A.0 B.0.5 C.1 D.3
A.SiteS->TRANSmitteRS->ANteNNA->CellS B.SiteS->ANteNNA->TRANSmitteRS->CellS C.SiteS->CellS->TRANSmitteRS->ANteNNA D.SiteS->ANteNNA->CellS->TRANSmitteRS