Which of the Following Processes Might Be Involved in Temperature

Which of the following processes might be involved in temperature regulation by the integumentary system?

A) evaporation of sweat from the surface of the skin to reduce body temperature
B) dilation of dermal blood vessels to decrease loss by radiation and convection
C) constriction of dermal blood vessels to help remove excess heat
D) constriction of dermal blood vessels to prevent tissue damage when skin temperature drops too low
E) All of these are correct relationships in body temperature regulation.