The Effectiveness Lag Is

The effectiveness lag is

A) the time it takes for policy makers to obtain data indicating what is happening in the economy.
B) the time it takes for policy makers to be sure of what the data are signaling about the future course of the economy.
C) the time it takes to pass legislation to implement a particular policy.
D) the time it takes for policy makers to change policy instruments once they have decided on the new policy.
E) the time it takes for the policy actually to have an impact on the economy.