Refer to the Information Provided in Figure 15

Multiple Choice

Refer to the information provided in Figure 15.1 below to answer the questions that follow.
Figure 15.1
-Refer to Figure 15.1.If policy makers decide at time t₅ that the economy is expanding too fast,but the policy changes start affecting the economy at t₇,then the policy will be

A) inappropriate.
B) well timed.
C) ineffective.
D) optimal.