Which Statement Is True

Which statement is true?

A) The Fed failed to perform its lender of last resort job after the emergency created by the terrorist attacks on 9/11.
B) Thanks to the Check Clearing for the 21^st Century Act,the use of checks as a medium of exchange should disappear within a few years.
C) The Chinese government and central bank has a significant influence over long-term interest rates in the U.S.
D) The Fed changes the federal funds rate in exactly the same manner in which it changes the discount rate.