Over the Past Two Decades, Whenever Changes in Bank of Canada

Over the past two decades, whenever changes in Bank of Canada policy have been announced,

A) the changes have actually taken place.
B) a majority of lawmakers did not believe the changes would actually take place.
C) the changes have rarely taken place.
D) the government has taken steps to negate the changes more than 50 percent of the time.
E) the changes have taken place without interference from parliament about 25 percent of the time.