Which of the Following Refers to Downshifting

Which of the following refers to downshifting?

A) The conscious decision to reduce one's material consumption
B) The resentment that arises as a result of another's belongings, and a desire to acquire similar possessions
C) The tendency for a consumer to engage in bargaining behaviors when making purchases
D) The tendency for consumers to take excessive pride in themselves, including their appearance and accomplishments.
E) The tendency of an individual to retain control and ownership over his possessions