In response to Covid, starting in early 2020, the U.S. government ______________ and the Federal Reserve______________. A. passed a series of large spending bills in an attempt to increase AD; drove interest rates to exceptionally low levels. B. attempted to shift the AD curve to the left; attempted to shift the AD curve to the right. C. responded as would be recommended by classical economics; pursued activist monetary policy. D. A and B are correct but not C..