The Following Data Give the Dates of Successive Turning Points

The following data give the dates of successive turning points in U.S. economic activity and the corresponding levels of real GDP at the time: $$\begin{array} { c c c } \text { Turning Point } & \text { Date } & \text { Real GDP } \\& & \text { (1996 \$ billions) } \\\text { (A) } & \text { Feb. } 1961 & 2352.9 \\\text { (B) } & \text { Dec. } 1969 & 3571.4 \\\text { (C) } & \text { Nov. } 1970 & 3566.5 \\\text { (D) } & \text { Nov. } 1973 & 4151.1 \\\text { (E) } & \text { Mar. } 1975 & 4010.0\end{array}$$ Which of the following periods was an expansion?

A) February 1961 through December 1969
B) December 1969 through November 1970
C) November 1970 through March 1975
D) December 1969 through November 1973