Which of the following statements are true of a fever? (Read carefully and select all of the correct statements.)

A)A substance or pathogen that causes a fever is a pyrogen.
B)A low fever may be beneficial in that WBCs become more active.
C)A pyrogen activates the heat gain mechanisms regulated by the thalamus.
D)A very high fever may cause brain damage because carbohydrates become denatured.
E)Some chemicals produced as part of inflammation are endogenous pyrogens.
F)A fever may be beneficial in that a higher temperature inhibits some bacteria.