The Reason That Some Economists Advise Central Banks to Never

The reason that some economists advise central banks to never validate a negative supply shock is

A) because the economy's adjustment process is ineffective.
B) that there are no short- run effects on any real variables, and so it is not worthwhile.
C) the monetary validation results in a higher level of unemployment.
D) the monetary validation causes downward pressure on wages.
E) to avoid the possibility of entrenching expectations and creating a wage- price spiral.