Which Statement About the Thermoregulatory Set Point in Mammals Is

Which statement about the thermoregulatory set point in mammals is true?

A) The set point for shivering is the same as the set point for panting.
B) In a given individual,the set points for all thermoregulatory processes are the same.
C) The set points for thermoregulatory processes are the same for all members of the same species.
D) Several weeks' worth of changes in environmental temperature can change the metabolic set point.
E) The temperature of the hypothalamus serves as a positive-feedback signal.