有以下定义和语句：
struCt workErs
int num; ChAr nAmE[20]; ChAr C;
struCt int DAy; int month; int yEAr; s;
;
struCt workErs w, *pw;
pw=&w;
能给w中yEAr成员赋值1980的语句是
A．*pw.yEAr=1980;
B．yEAr=1980;
C．pw-＞yEAr=1980;
D．s.yEAr=1980;