The Average Annual Growth Rate of Labor Productivity

The average annual growth rate of labor productivity

A) has remained relatively constant at about 3 percent.
B) fell to an average rate of about 1.5 percent during the period 1977 to 1995 and has averaged 3.2 percent since then.
C) steadily rose to about 4.5 percent in the late 1990s and early 2000s.
D) fell steadily to its postwar low in 1984 but has risen rapidly since then.
E) reached a peak in 1995 but has fallen steadily since then.