Which Statement Best Explains How Orexigenic Factors Affect Appetite

Which statement best explains how orexigenic factors affect appetite?

A) Orexigenic factors are hormones, neurotransmitters, and other factors that affect feeding centers in the hypothalamus that decrease appetite.
B) Orexigenic factors are hormones, neurotransmitters, and other factors that affect feeding centers in the hypothalamus that stimulate appetite.
C) Orexigenic factors are neurons in the ventral medial nucleus of the hypothalamus that function as a satiety center-meaning that impulses from these neurons decrease appetite so that we feel sated, or satisfied.
D) Orexigenic factors are neurons in the ventral medial nucleus of the hypothalamus that function as a satiety center-meaning that impulses from these neurons increase appetite.