In the last months of 2008 following the collapse of interest rates on commercial paper and access to this form of liquidity O a. AIG; stayed constant; remained unchanged O b. Washington Mutual; fell by over 3 percent; expanded O c. General Motors; rose by over 3 percent; contracted O d. Lehman Brothers; rose by over 5 percent; contracted O e. Merrill Lynch; rose by 5 percent; stayed constant