As Monetarists View the Equation of Exchange

As monetarists view the equation of exchange:

A) V changes erratically, in that it may either rise or fall in response to a given change in M
B) V is quite stable
C) V usually changes in the same direction of any given change in M
D) V usually changes in the opposite direction of any given change in M
E) V changes in the same direction as M when M is increasing, but in the opposite direction when M is decreasing