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在我国，3月25日，某交易者买入10手5月LLDPE期货合约同时卖出10手7月LLDPE期货合约，价格分别为9340元/吨和9440元/吨。4月11日，该交易者对上述合约全部对冲平仓，5月和7月合约平

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A、扩大80

B、扩大90

C、缩小90

D、缩小80

参考答案:

D

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