A Fundamental Problem with Goldman Sachs' GSAMP Trust, Impeding Goldman's

A fundamental problem with Goldman Sachs' GSAMP Trust, impeding Goldman's ability to foreclose on defaulted mortgages was that:

A) Homeowners' equity in the securitized mortgages was less than 1 percent
B) 40 percent of the securitized loans had little or no documentation
C) Investors relied on Goldman Sachs
D) The underlying assets were second mortgages
E) The mortgages were allocated into thirteen tranches with different risk characteristics