单项选择题

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.year=1980;
C.pw->year=1980;
D.s.year=1980;