Why Has Impoundment Authority Not Been Used Since the Presidency

Multiple Choice

Why has impoundment authority not been used since the presidency of Richard Nixon?

A) The Supreme Court ruled that it could no longer be used.
B) It was outlawed in the 1974 Budget and Impoundment Act.
C) The Office of Management and Budget passed a rule against it.
D) The Ford administration resorted to impoundment as a matter of routine.