【C017117】在MyBatis中，对以下错误代码片段修改正确的选项是（ ）。

dao接口：

    public List findAll(String id,String name);

Mapper：

    <select id="findAll" resultType="user" parameterType="string" >

????????    select * from sys_users

????????    <where>

????????????    <if test="id != null">

????????????????      and id=#{id}

????????????    </if> 

          <if test="name != null">

????????????????      and name=#{name}

????????????    </if> 

????????    </where>

    </select>

• A.修改dao接口代码为：public User findAll(String id,String name);

• B.修改mapper代码为：
  
      <!--省略list定义-->
  
      <select id="findAll" resultType="list" parameterType="map" >
  
  ????????    select * from sys_users
  
  ????????    <where>
  
  ????????????    <if test="id != null">
  
  ????????????????      and id=#{id}
  
  ????????????    </if> 
  
            <if test="name != null">
  
  ????????????????      and name=#{name}
  
  ????????????    </if> 
  
  ????????    </where>
  
      </select>

• C.修改dao接口代码为：public List findById(@Param("id") String id,@Param("id") String id);

• D.修改dao接口代码为：public List findById(Map<String,String> map);