单项选择题

A、供电可靠率≥99.990%,综合电压合格率≥99.98%
B、供电可靠率≥99.990%,综合电压合格率≥99.95%
C、供电可靠率≥99.965%,综合电压合格率≥99.95%
D、供电可靠率≥99.999%,综合电压合格率≥99.98%