设有如下定义和声明: struct 3 {int a; struct s *next }; struct s x[4]={1,&x[1],3,& x[2],5,&x[3],7,/0),*t; t=&x[0]; 则下列表达式值为2的是( )
A.
++t->a
B.
(*t).a++
C.
t->a++
D.
t++->a
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