对WageItem 实体类有如下配置，其中空白处应填入的代码是

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public class Wage{ //月工资实体类
private Long wid;
private String empName; //雇员姓名
private String month; //月份
//Getter & Setter
……
}
public class WageItem{ //工资项
private Wage wage;
private Long iid;
private String itemName; //项目名称,如基本工资、职位津贴等
private String amount; //数额
//Getter & Setter
……
}


<class name="WageItem" table="fin_wage_item">
<id name="iid" column="wi_id" type="java.lang.Long">
<generator class="native" />
</id>
<property name="itemName" column="wi_name"
type="java.lang.String" />
<property name="amount" column="wi_amount"
type="java.lang.Double" />
<!--配置wage 属性-->
______________________
</class>
A．<many-to-one name="wage" column="wi_wage_id" class="Wage" />
B．<one-to-many name="wage" column="wi_wage_id" class="Wage" />
C．<set name="wage">
<key column="wi_wage_id" />
<one-to-many class="Wage" />
</set>
D．<set name="wage">
<key column=" wi_wage_id" />
<many-to-one class="Wage" />
</set>

740317431

A