Which of the following would cause a shift in the demand curve for a good?

Question

Quizplus · Accepted Answer

An increase in consumers' income would lead to an increase in demand for a good, shifting the demand curve to the right. 
A decrease in the number of consumers would lead to a decrease in demand for a good, shifting the demand curve to the left. 
The expectation that the price of a good will increase in the future would lead to an increase in demand for a good in the present, shifting the demand curve to the right. Therefore, all of these factors would cause a shift in the demand curve for a good.

Which of the Following Would Cause a Shift in the Demand