单项选择题
A.XXXX XXXX ^10000000B.XXXX XXXX v 10000000C.XXXX XXXX ⊕10000000D.XXXX XXXX ⊕01111111
A.125B.0x7EC.0x6CD.126
A.XXXX XXXX^00101010B.XXXX XXXXv 00101010C.XXXX XXXX⊕00101010D.XXXX XXXX&00101010