E频段两通道RRUB40的输出功率是（)A.8X10WB.2X20WC.1X20WD.2X40W

E频段两通道RRUB40的输出功率是()

A.8X10W

B.2X20W

C.1X20W

D.2X40W

请帮忙给出正确答案和分析，谢谢！