下列哪项为左心室肥大的心电图表现()

A、Rv_{1<\/sub>+Sv5<\/sub>>1.2\r\nmV
B、Rv1<\/sub>>1.0\r\nmV
C、RaVL<\/sub><1.1\r\nmV
D、Rv5<\/sub>+Sv1<\/sub>>4.5\r\nmV
E、RaVR<\/sub>>O.5\r\nmV}