Which of the following statements is true about the active inverter and the passive inverter?

A、ApassiveinverterreferstoadefinitionthatconvertingDCintoACbacktothegrid;
B、AactiveinverterreferstoadefinitionthatconvertingDCintoACtoload;
C、EmergencypowersupplyconvertsDCintoACforlighting,andtheinverteroccurringinitscircuitiscalledactiveinverter;
D、AphotovoltaicinverterconvertsDCintoACbacktothegrid,andtheinverteroccurringinitscircuitiscalledactiveinverter