单选题 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) w.year=1980;
C) pw-＞year=1980; D) w.s.year=1980;