单项选择题

我国电力网络目前的平均额定电压主要有:( )。

A. 3.15kV,6.3kV,10.5kV,36.75kV,115.5kV,231kV,346.5kV,525kV
B. 3.15kV,6.3kV,10.5kV,37kV,115kV,230kV,347kV,525kV
C. 3.15kV,6.3kV,10.5kV,37kV,115kV,230kV,345kV,525kV
D. 3.15kV,6.3kV,10.5kV,36.75kV,115.5kV,230kV,345kV,525kV