The Political Economy of the S&L Crisis Shows That the Principal-Agent

The political economy of the S&L crisis shows that the principal-agent problem occurs in politics.In this instance,the agent-regulators did not act to protect the principal-taxpayers because

A) regulators wanted to escape blame, hoping the situation would improve before others discovered the problem.
B) regulators responded to pressure to pursue regulatory forbearance from politicians who had accepted campaign donations from owners of S&Ls.
C) Congress was unwilling to allocate the necessary funds regulators needed to close insolvent S&Ls.
D) all of the above.
E) only A and B of the above.