People may have different opinions about Karen, but I admire her.___, she is a great musician.    [ ]

A. After all      

B. As a result    

C. In other words  

D. As usual

电能计量用电压互感器和电流互感器的二次导线最小截面积为（）。

A.1.5mm²、2.5mm²；

B.2.5mm²、4mm²；

C.4mm²、6mm²；

D.6mm²、20mm²。