There Can Be Strong Pressure on the Bank of Canada

There can be strong pressure on the Bank of Canada to validate a large negative supply shock.The motive behind this pressure is

A) to reduce unemployment below the NAIRU.
B) that the Bank of Canada must be seen to be pursuing a restrictive monetary policy,in order to stop any expectational inflation.
C) that wages often fall only very slowly,so the adjustment back to full employment can take a very long time.
D) that there is the danger of initiating a wage-price spiral.
E) to keep a "healthy" amount of inflation in the economy.