以下哪项断定最有助于说明上述计划的合理性？

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25835' and id < 2170121 and id<>'2170121' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25835' and id > 2170121 and id<>'2170121' order by id asc limit 5