Which of the Following Is Not a Reason the Bank

Which of the following is not a reason the Bank of Canada conducts monetary policy principally through open market buyback operations?

A) Because the Bank of Canada initiates them, it completely controls their volume.
B) They can be done on both a large and small scales.
C) They can be implemented quickly, without administrative delay or regulation changes.
D) Because printing and destruction of Canadian currency is a violation of Canadian law.