Which of the Following Is the Aggregate Demand Explanation of the Slow

Which of the following is the aggregate demand explanation of the slow U.S. recovery?

A) There is insufficient credit to return the economy to the natural level of output.
B) There is insufficient demand to return the economy to the natural level of output.
C) The unemployment rate is too low to return the economy to the natural level of output.
D) The interest rate is too low to return the economy to the natural level of output.
E) Government spending is too low to return the economy to the natural level of output.