Statistical Analysis Reveals That the Long-Run Money Velocity (For Euro-Area

Statistical analysis reveals that the long-run money velocity (for euro-area M3, which is equivalent to U.S.M2) :

A) Is unstable in the euro similar to the instability that exists in the U.S.
B) Is much more stable in the U.S.than in the euro area
C) Has increased in the euro area since 1980
D) Is more stable in the euro area than in the U.S.