In the United States Between 2007 and 2009

In the United States between 2007 and 2009,

A) the M1 money multiplier steadily increased.
B) the M2 money multiplier stayed fairly constant and then fell sharply.
C) the M2 money multiplier steadily decreased.
D) changes in the currency drain and required reserve ratio did not affect the money multiplier.
E) the M2 money multiplier decreased throughout 2007 and then increased.