As of 2013,the U

As of 2013,the U.S.monetary base has ________ its 2007 level,the level held before the 2008 financial crisis,as a direct result of ________.

A) quadrupled;the Fed's actions with quantitative easing
B) doubled;the Fed's actions with quantitative easing
C) tripled;the Fed's actions with quantitative easing
D) quadrupled;the Fed's actions and the resulting reduction of the money multiplier
E) tripled;the Fed's actions and the resulting reduction of the currency drain