Regarding the Output Growth Slowdown During the 1970s and 1980s,it

Multiple Choice

Regarding the output growth slowdown during the 1970s and 1980s,it is true that

A) the slowdown took place in the U.S.but not other developing countries.
B) the primary determinant of the slowdown was lower labor productivity growth.
C) increases in capital formation did not offset some of the slowdown in labor productivity growth.
D) both b and C