问题:
A . SELECT SN,AGE,SEX FROM SWHE RESN=“王华”B . SELECT SN,AGE,SEX FROM SWHE REAGE>(SELECTAGEFROMSWHERESN=“王华”)C . SELECT SN,AGE,SEX FROM SWHE REAGE>(SELECTAGEWHERESN=“王华”)D . SELECT SN,AGE,SEX FROM SWHE REAGE>王华.AGE
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