Which of the Following Statements Regarding Relative Humidity and Heat

Which of the following statements regarding relative humidity and heat loss is true?

A) Continually drying the skin with a towel before sweat evaporates enhances evaporative cooling.
B) One can tolerate relatively high environmental temperatures as long as humidity remains low.
C) Sweat cools the skin more effectively in high temperatures with high humidity.
D) With high humidity, ambient air's vapor pressure approaches that of moist skin, which enhances evaporative heat loss.