下列语句段中，正确的是( )。

A．struct {int x; float y; int a[2]; unsigned b[3]; char name[10]; };
B．structstu { unsigneda[3]; unsigned b[4]; }x; int*p=&a;
C．struc tsu { int a; float x[4]; }y={1,1.0}; floatdat a=x;
D．stmct nd {int a,b; unsigned c[2]=5; };