A.G=P-EIRP+LF+Lf B.G=P-EIRP-LF-Lf C.G=P+EIRP+LF+Lf D.G=EIRP+LF+Lf-P
A.10 B.20 C.6 D.36
A.2A B.6A C.4A D.8A