Which of the Following Best Illustrates a Shift in the Demand

Which of the following best illustrates a shift in the demand curve?

A) When prices remain the same, there is a significant change in supply.
B) As the price is raised, the quantity demanded increases, assuming all else stays the same.
C) When prices remain the same, there is an increase or decrease in demand.
D) As the price is lowered, the quantity demanded decreases, assuming all else stays the same.
E) An internal matter has forced a price change of some type, but it does not impact demand.