单项选择题

在Myabtis核心文件中想要加载映射文件代码编写无误的一项是()

A.< mapper resource="com/bw/bean/UserMapper.xml"/>
B.< mapper resource="com.bw.bean.UserMapper.xml"/>
C.< mapper class="com/bw/bean/UserMapper.xml"/>
D.< mapper url="com.bw.bean.UserMapper.xml"/>

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