Which of the Following Is True About the Hierarchy of Needs

Which of the following is true about the hierarchy of needs theory?

A) Once a need has been satisfied, it becomes a motivator.
B) People's individual needs do not vary much.
C) Lower-level needs must be met before higher-level needs emerge.
D) Higher-level needs must be met before lower-level needs emerge.
E) The more a need is satisfied, the more it becomes a motivator.