Which of the Following Best Describes the Basic Idea of Set-Pointtheory

Which of the following best describes the basic idea of set-pointtheory?

A) People are consciously capable of choosing, or "setting," a particular weight level and easily maintaining it.
B) The body is naturally "set" to maintain a particular weight by increasing or decreasing feelings of hunger and basal metabolic rate.
C) Once you "set" your basal metabolic rate to a higher level, it is possible to eat much more food without gaining weight.
D) Once you establish and "set" CCK at a lower level, it is possible to eat much more food without gaining weight.