The correct answer is B. Deflation.
Deflation is a general decrease in prices and wages over time. It is often caused by a decrease in the money supply, which can lead to a decrease in demand for goods and services. Deflation can also be caused by an increase in productivity, which can lead to a decrease in the cost of production.
Inflation is a general increase in prices and wages over time. It is often caused by an increase in the money supply, which can lead to an increase in demand for goods and services. Inflation can also be caused by an increase in costs, such as wages or raw materials.
Reflation is a policy of increasing the money supply in order to stimulate the economy. It is often used during a recession, when the economy is contracting. Reflation can lead to inflation, but it can also lead to economic growth.
None of the above is not a correct answer.