11月1日，大豆现货价格为2020元／吨，某加工商对该价格比较满意，希望能以此价格在一个月后买进200吨大豆。为了避免将来现货价格可能上涨，从而提高原材料成本，决定在大连商品交易所进行套期保值。11月1日买进20手9月份大豆合约，成交价格2050元／吨。12月1日当该加工商在现货市场买进大豆的同时，卖出20手9月大豆合约平仓，成交价格2060元／吨。请问在不考虑佣金和手续费等费用的情况下，12月1日对冲平仓时基差应为（）元／吨能使该加工商实现有净盈利的套期保值。
A.>-30
B.<-30
C.<30
D.>30
参考答案：B
解析：①数量判断：期货合约是20×10=200吨，数量上符合保值要求；②盈亏判断：根据“强卖赢利”原则，本题为买入套期保值；基差情况：11月1日是（2020-2050）=-30，按负负得正原理，基差变弱，才能保证有净盈利。因此12月1日基差应<-30。
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