谓词公式(x)P(x,y)∧(x)(Q(x,z)→(x)(y)R(x,y,z)中量词x的辖域是( )

A、(<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15455338838145a9ed1a888904b47978ab2d90b041379image1.png">x)Q(x,z)→(<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1545533883903f28b55e7c52a480f8a73f72c413ca99cimage3.png">x)(<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1545533883993274c2a028b1e49bd9b64f8c02708644dimage1.png">y)R(x,y,z))

B、Q(x,z)→(<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/154553388408526b1882cae194d588e45ebe66f97dd87image1.png">y)R(x,y,z)

C、Q(x,z)→(<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1545533884162d9148bd7f96c46669aeb3b89a3719a50image3.png">x)(<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1545533884242950045adac9649e2be0ddb9552c24066image1.png">y)R(x,y,z)

D、Q(x,z)