Refer to the Following Figure When Answering the Next Five $\tilde { Y } _ { t }$

Multiple Choice

Refer to the following figure when answering the next five questions.
Figure 9.2: U.S. Output Fluctuations 1960-2012
(Source: BEA and CBO, data from Federal Reserve Economic Data, St. Louis Federal Reserve)
-Consider Figure 9.2, which represents $\tilde { Y } _ { t }$ . In approximately what years did the U.S. economy experience its longest economic expansion?

A) 1964-1970
B) 1978-1980
C) 1996-2001
D) 1972-1974
E) This cannot be determined from the information given.