A、<img alt="" src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1620627214563fc57682a70bf4c708c773db10f51e046image36.png" style="height:25px; width:116px" />.
B、<img alt="" src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/162062721459821ade5adafe34262aa360fccbf96b000image37.png" style="height:25px; width:110px" />.
C、<img alt="" src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1620627214626c7bb2e9191d4441bab729a7a5c79c3e9image38.png" style="height:25px; width:116px" />.
D、<img alt="" src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/162062721465943ebfd1af36e44d99974d76ebc5f162eimage39.png" style="height:25px; width:121px" />.
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的通解是( ).