Change s i n rea l GD P reflect
A.
onl y change s i n prices.
B.
onl y change s i n th e amount s bein g produced.
C.
bot h change s i n price s an d change s i n th e amount s bein g produced.
D.
neithe r change s i n price s no r change s i n th e amount s bein g produced.