Recall Application 1, "Beyond Purchasing Treasury Securities," to Answer the Following

Recall Application 1, "Beyond Purchasing Treasury Securities," to answer the following questions:
-According to the application, how did the Fed conduct monetary policy prior to 2008?

A) The Fed's asset holdings were less than $1 trillion.
B) The Fed only held U.S. Treasury securities as its assets.
C) The Fed never intervened in a specific credit or security market.
D) All of the above are correct.