A、<p><span style="font-family: 微软雅黑, 'Microsoft YaHei';">0</span><br></p>
B、<p><span style="font-family: 微软雅黑, 'Microsoft YaHei';">1</span><br></p>
C、<p><span style="font-family: 微软雅黑, 'Microsoft YaHei';">-1</span><br></p>
D、<p><span style="font-family: 微软雅黑, 'Microsoft YaHei';">2</span><br></p>