Which of the Following Would Not Be a Demand and Supply

Which of the following would not be a demand and supply characteristic in the later stages of a product's life cycle?

A) Demand has become more certain and supply is predictable.
B) Margins are lower due to an increase in competitive pressure.
C) Product availability is crucial to capturing the market.
D) Price becomes a significant factor in customer choice.
E) All of the above are characteristics of the later stages.