Generally Speaking, from 1980 Through 2010, the Velocity of Money

Generally speaking, from 1980 through 2010, the velocity of money:

A) has remained fairly stable at about 7.2.
B) frequently fluctuated up and down over a wide range.
C) was fairly stable at about 7.0 up to the late 1990s, and then increased to 9.0 and over since 2000.
D) dropped almost every year until 1995, and then grew almost every year from 1995 through 2010.