An example of a feedback effect is:

A  When the price level increases, which causes people to reduce consumption and expect further increases in the prices of goods and services. This expectation creates a negative feedback effect and can cause dramatic recessions.

B  When the price level drops, which causes people to expect further increases in the prices of goods and services.  This expectation causes people to increase their consumption.

C  When the price level drops the prices of assets can increase.  This can increase present day consumption and investment.

D  When the price level drops, which causes people to expect further decreases in the prices of goods and services.  This expectation causes people to reduce their consumption in order to purchase goods and services at a later date and at a lower price.