As a Rule of Thumb, a Recession Is

Multiple Choice

As a rule of thumb, a recession is

A) a fall in real GDP lasting at least one month.
B) a fall in real GDP lasting at least six months.
C) said to occur whenever real GDP falls below the long-term trend.
D) said to occur whenever real GDP falls below the long-term trend for at least one month.
E) a fall in real GDP lasting at least one year.