The correct answer is D. A recession is usually no longer than six months.
Recession is termed as contraction of business cycle whereby we can say that there is slowdown in economic activities.
Macroeconomic indicators shows that there might be rise in the rate of unemployment, business profit, bankruptcy, capacity utilization, household income and gross domestic product.
When there is bigger spread of spending that is the time when recession occurs. Some events which may trigger to recession include external trade shock, adverse supply shock, financial crisis and bursting of economic bubble.