单项选择题

若有以下结构体类型定义,则赋值语句正确的是( )。struct worker{char name[16]; struct date{int year; int month; int day; }birthday;}x; A. x.year=1999; B. x.birthday.month=3; C. x.name="黎明"; D. x.birthday=1999.9.9;

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