如果某投资者拥有一份期权合约，使其有权在某一确定时间内以确定的价格购买相关的资产，则该投资者是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25443' and id < 2143234 and id<>'2143234' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25443' and id > 2143234 and id<>'2143234' order by id asc limit 5