已知工频对称三相电路中，A相电压为220V，初相为30°，则

A、C相电压的解析式是( )

B、uB＝220sin(100πt-120°)V，uC＝220sin(100πt+120°)V

C、uB＝220sin(100πt-90°)V，uC＝220sin(100πt+150°)V

D、uB＝220/2sin(100πt-120°)V，uC＝220/2sin(100πt+120°)V

E、uB＝220/2sin(100πt-90°)V，UC＝220/2sin(100πt+150°)V