___ was criticized for its poor business ethics when it bet on the market risk both ways: in 2006 it continued to sell high _____ CDOs and at the same time betting against their increased value by purchasing _________ which assumed the CDOs would ____

A. Goldman, risk, stock derivatives from AIG, fail

B. Bear Stearns, risk, credit default swaps from AIG, fail

C. Goldman, risk, credit default swaps from AIG, fail

D. AIG, risk, credit default swaps from Goldman, fail