Which of the Following Statements About the Product Life Cycle

Which of the following statements about the product life cycle (PLC) is true?

A) The PLC concept encourages marketing managers to think reactively.
B) Marketers do not yet understand the relationship between the adopter categories and the stages of the PLC.
C) There are as many new buyers in the maturity stage of the PLC as in the growth stage.
D) The PLC is especially useful as a predicting tool.
E) Just as there are five adopter categories,there are five PLC stages.