@Qualifier注解中，（）能实现ByName自动装配？
A.@Autowired
private MbIntroduceDao mbDao;
B.@Qualifier(value="mbIntroduceDao")
private MbIntroduceDao mbDao;
C.@Autowired
@Qualifier(value="mbIntroduceDao")
private MbIntroduceDao mbDao;
D.@Autowired(value="mbIntroduceDao")
@Qualifier
private MbIntroduceDao mbDao;
正确答案是C