问题描述：
[单选]
数据库中存在Orders（OrderDate，OrderPrice，Customer）表，其中OrderDate为订单日期，OrderPrice为订单金额，Customer为客户，现在要查找出订单总金额少于2000的客户，则可以使用哪条SQL语句（）
A．SELECT Customer,SUM(OrderPrice)from Orders WHERE SUM(OrderPrice)<2000 GROUP BY Customer
B．SELECT Customer,COUNT(OrderPrice)from Orders GROUP BY Customer HAVING COUNT(OrderPrice)<2000
C．SELECT Customer,COUNT(OrderPrice)from Orders HAVING COUNT(OrderPrice)<2000 GROUP BY Customer
D．SELECT Customer,SUM(OrderPrice)from Orders GROUP BY Customer HAVING SUM(OrderPrice)<2000
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答案解析：无
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