A.≥5MΩ B.≥6MΩ C.≥7MΩ D.≥8MΩ
A.≥700MΩ.Km B.≥800MΩ.Km C.≥900MΩ.Km D.≥1000MΩ.Km
A.1300-1324 B.1200-1325 C.1100-1325 D.1000-1325