Which of the Following Statements Relative to Exercise and Body

Which of the following statements relative to exercise and body temperature is FALSE?

A) exercise can produce significant amounts of heat, but the body temperature is usually regulated quite effectively
B) sweat is mainly water and its evaporation is the main means of temperature regulation when exercising in the heat
C) rehydration with cold water appears to be an effective technique to help reduce the rise in body temperature during exercise
D) electrolyte replacement is generally not needed during exercise itself
E) if an equal amount of fluid is consumed, carbohydrate solutions are more effective than plain water as a means to control body temperature during short-term exercise